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127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012
WWW.VIETMATHS.COM                            NGUYEN THANH HAl                                   20                    DE T...
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20 de thi trac nghiem tuyen sinh vao dh cd mon vat ly
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20 de thi trac nghiem tuyen sinh vao dh cd mon vat ly
20 de thi trac nghiem tuyen sinh vao dh cd mon vat ly
20 de thi trac nghiem tuyen sinh vao dh cd mon vat ly
20 de thi trac nghiem tuyen sinh vao dh cd mon vat ly
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20 de thi trac nghiem tuyen sinh vao dh cd mon vat ly

  1. 1. 127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012
  2. 2. WWW.VIETMATHS.COM NGUYEN THANH HAl 20 DE THI TRAc NGHIE•M TUYEN SINH V Ao D~I H<)C, CAO DANG~o MON "uvi _ ,i~LJ> . VAT LIs:$:$ NHAxuATBAND~IHQCSUPH~M 127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012
  3. 3. WWW.VIETMATHS.COM LdINOIE)AU Ngay 27112/2006, B(l Giao due va Dao tao (fa c<) Cong van s{)4653/BGDDT- KT&K() v~ viec tiep tuc (f(~i moi trong kl thi H)l nghiep Trungoc phd thong va tuyt1n sinh D~i hoc, Cao <ldng narn 2007. Then do. (feli vdi on V~t II, kl thi Dai hoc, Can ddng va t6t nghiep THPT num 2007 se <luge as U(.: thi trdc nghiern hoan toan. Nharn giiip c .ic em h9C sinh Wp 12 dang chufin bi thi tuy~n vao Dai hoc, Cao .Ung c()them tai lieu tham khan (f~ luyen t~p theo hlnh thuc thi trlic nghiem,hung Wi bien soan t;}p such: ....0 d~ thi trdc nghiim tuyi" sinh VQO Dai hoc, 2ao Mllg • mOil Vqt Ii". N()i dung eu{n such g(im 3 phfrn: Phd,. I: Cdc di thi trdc IIghi?m: g<1m 20 d~ thi. N(li dung cua moi (f~ thi naeghiern U~l1 ham sat then lit! kien cau tnic l1e thi triic nghiern tuycill sinh vao E>t;tioc. Cuo d5ng narn 2007 ciia B<) Giiio due va Dau tao . M0i d~ thi trac nghiernon V~t Ii co 50 diu. turlng Ungvdi thoi ginn lam bai Ii) 90 phUl. Ciic diu tdc nghiem sit dung trong d~ thi thucc IO<:J.i cau tde nghiern nhieura chon (MCQ). Mlii cfiu d) hai phdn, phan d<1u (du<;1e goi lit phdn dan) neu raan de, cung cifp th()ng tin can· thiet h()~c neu mot diu h()i; phfrn sau Iii cachmtng an tra I(i uc chon (t1Ufc danh dall h~ng de chu di A, B. C, D). Tronge plurong an tra kri. chi c(l duy nhat mOt phuong an tra loi dung; cac phuong anhiic dl(.k dira vao Ctl t.ic dung "gay nhieu" dt.,i vdi thi sinh. PhfilllJ: Dap all: M()i de thi deu co dap an, Phiill 111: Huang ddll tra 1m: Gidi thich vieclua Ch91l phuong an tra Itli dungua tirng cau. Phdn nay giiip hoc sinh It! ki6m tra, t~( danh gia va <lieu chinh eachoc. ()~ lam tcit mot bai thi theo hinh thuc trdc nghi~m. chung t6i c() vai Wihuyt:ll d{H v(1i (.;i<.: em hl_)c sinh: , 1. Phili h(_)cth;}t ki hai h9C, m1m chilc kien thue cho d n()i dung ehu(1ng trlnhi (xem cau tnk de thi dt! kien ("1 trang 5); tranh h(_)ctu. h9C I~eh. 2. Glll phan h<)lh(1i gian cho m~i rau melt each h(,1pIi d€ c() (fii thoi gian lam ,m vt;n de thi. Call nao rna niim ehac thl quyet dinh nhanh de kh6i mat thoiian. Khtlllg nen ulfng b,li qua lUll tnrdc m(lt cUu nao d6. Neu g~p call h()i rna.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 3.
  4. 4. WWW.VIETMATHS.COM khong ndrn chdc dtt(.11phuong an tra l6i dung hoac phai giiii mat nhieu th(fi gian thl nen tarn th(li danh dau va ht) qua d~ lam cau khtic; l:u6j giif s~ quay lam lai. ·3. Can doc kl m)i dung cau hoi va doc tron ven 4 phuong an tni Wi d€ quy€t dinh hra chon phuong an dung. Phai tMt tlnh tao de phfin hi~l Cal" phuong an gay nhieu vdi prnrong an dung. 4. Khong nen doc toan hO de thi d~ chon "diu dt!" lam tnroe VI khong Ull thC1i gian va th~t kho CCl the phan hi(!t du(Jc dau la "cau de". dau la "diu kho", Nen khan truong va t~p trung lam then thrr ll,l cac cau trike nghiem drr neu lrong de. 5. Trd i()i tat d ctic cau hoi. MOi diu d~u co diem nhu nhau cho nen ho diu nao la mat diEm cdu do, Do khong hi teu di~m neu thi sinh chon phirong an tra l6i sai, nen vdi nhitng cau h,)i rna ta khong hiet chill: phirong an tra loi dung thi tru(k khi het gi(f cac em ding nen s4Y luan, phong doan d~ chon nhanh phintng an tra loi h<.1P li nhat. 6. Phai d.inh dau phirong an Il}a chon theo dung hudng dITn va diing vdi sci tlur nrciia diu hili tren phieu lra loi. Vi du, neu La dang lam cau so 15 va chon B luphuong an dung thl La dung hut chi ttl d~m va Hlp kin ca dien tich 0 B tren dong s{f 15 ciiu phieu (..alai: ABC D o .00 Khong U1.(<.jc 2 ) cho cung m<)t diu VI 06 thi tuyen sinh vao Dai hoc va Cao l(i dang narn 2007 chi co mot phuong an tra loi dung. Trong tn(ang hop ttl nhrtm ( hoi)l muon thay d<1i phuung an tra l(fi thl phai tfry th~l such ( cii va ttl kin tl 11l{~i UU1c chon. 7. Can phiii luyen t~p tren mOl s606 thi thlt. Ct) ging t~f mlnh lam thlt tron ven tung OC (hi m(lt theo thifi gian qlly dinh, Sau 0<) so sinh vdi oap an (hoac lurong d~n tra loi) va nr suy ngam dt?rut kinh nghi~m, di~u chinh cach hQc. V di Il(yi tiling such nhtt Iren, chung t6i tin Ul{~ngrling "20 dJ lhi trile nghi?m tuyi" sinh vao Dq.i h{Jc, Cao dd1lg - mOil V~t Ii" se la t~p t~1i li~u tham khan thict thl,lc, h5 ich, giup de em h9C sinh co di€u kic:n luy~n t~p ..nang can kl nang lam hal lhi tuy~n sinh van D<;lihQC va Cao d~ng then hlnh thut: trac nghiC:m. M~c till uJ r~t cc) g~ng trong hien S()<:ln. nhHng chiic kh{)ng th<3 tdnh khoi thicu sot. Chung l6i rat hoan nghcnh va dm (1n nhung y kien u6ng gop xfiy dl,(ng cua h~n (1(.)C d6 lfin tai han [(~i, clIt)n sach se houn hao ht1n. ~ ? NGUYEN THANH HAl127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 4
  5. 5. WWW.VIETMATHS.COM ... ; ~ ~ ." PHAN I: . CAC DE THI TRAC NGHIEM CAU TRue HE THI TRAC NGHll~M TUYEN SINH V Ao HA-I H()C. CAO BANG NA.M 20()7(I>tJ KII~N), M6N v ~ T l,i. I. Oao dQng co h9C (6) - Sl,Ikhuc xa anh sang va chi~t Sll~t - Dai wong v~ dao dQng di~u hoa - Hi~n tUQllg phan xa toan phan - Con lac 10 xo - Lang kinh - Con I~c don - Thiiu kinh mong - T6ng hop dao d9ng 6. MAt va cac dung ey quang hoc (4) - Dao d(_)ngl~t dan - May anh o Dao d(>ng cirong Me va hien nrong c(lng - M~t huong - K inh lup 2. Song co hQc. am hQc (4) - Kinh hien vi - Dai cuong v~ song co hoc - Kinh thien van - Song am 7. Tinh ch~t song cua anh sang (6) - Giao thoa - Tan sic anh sang - Song dun" - Giao thoa anh sang 3. Dong difn xoay chi~u (9) - Buoc song va mall slic anh sang - J)~i wang ve dong di~n xoay chieu - May quang pho - Dong di~n xoay chieu rrong doan mach xoay - Quang phil lien tuc chieu chi co di¢n Ira thuan, cuon cam hoac tu - Quang ph6 vach di~n - Tia IHng ngoai - Dong dien xoay chieu trong dean mach - Tia tu ngoai khong phan nhanh - Tia Ron ghen - Cong suat cua dong di~n xoay cbieu 8. Ltr(,Ynghi anh sang (5) - May phat di¢n xoay chieu mi)l pha - Hien nrong quang di~n ngoai - Dong dien xoay chieu ba pha - Thuyet 111I;mgtli anh sang - Dong co khong dong b{l ba pha - H i~n tuong luang d~n, luang tro, pin - May bien th~, ST truyen tai dien nang quang di~n - May phat dien mQt chien - M§u Bo va nguyen nr hidr6 - Chinh luu dong di~n xoay chi~u 9. V,t Ii h"t nhan (6) 4. Oao d(lng difn tir, song di~n tir (4) - C~u tao ella hat nhan nguyen tlr, dan vi - Mach dao d(;ng. dao dong dien tir khpi hrong nguyen nr - Dj¢n IiI tnrong - SI! phong X - Song dien ttl - Phan lrng hat nhan o S~r pMI va thu song di~11 nr - H~ tlurc Anhxtanh gifra n~l1gluong va 5. Sy- phan x;.t "it khiic x~ anh sang (6) kh6i hrong. 0(> h~lt khitL nang luqng lien - (jlrung phang k~t, nllng Itrqng lien k~t rieng - Giron]; du - Nang 1L19nghat nhan Chi chu: • Chi, :I() trong d4u n~(!(k don Iii .d lu"t,lnl-: (d!( kiJn) ((1u hili r,.6c n~hi¢m CU(/ IU711-: hd". p o ca« Ink d~ Ihi mic IIghi~m ru,dn sinh vim f)(_li hl,iC, CU(lllJlIg 1/(1", 20(J7· II/(~n Vt_ir If (d{( Io.ien) do U/) CD & f)T dinM M: (liin~ rrfn TNCNst"/7 (4033) III-:UY 71/1 2()()?,127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 5
  6. 6. WWW.VIETMATHS.COM [~] l. Khi eh£ll dit:m dao <l0ng lli~u hoa thl t~vi lri bien nc) se UJl: A. v.;in llie bangt), gia 16e cue da i. B. v~n l6<:eire dui, giu h)C ctrc ti0u. C. v;)n tC{chUng 0, gia tC{chilng O. D. v;)n l6c eire dai, gia tC)C hJng O. 2. Phuong trlnh dan <l(mg cuu m() chat di0m co d •uig x ::;::Asin: rot + ~ ). . T rong <l(). gC)l th(1i g ian 1l<1<It(l;!<: chon van hie: A. ehat JiC:m di qua vi 111dn hhng theo chieu dH(1ng. B. ch:!l di0m co Ii d() x = +A. C. ehat ui~m t:o Ii d(l x = -A. D. lhiit ui0m di qua vi tri can h[lng theo chi~u am. 3. Ha i con lu<.: Ii) xu thuc hicn duo u(mg <lieu hou <.:t.hrt.n I;) A I bien d(l Ian V~I A~ vdi AI > A1• E>i~u nao ulrdi day 1ft dung khi so sanh cd nang Clia hui LOIl lilL-? A. Cu nang cli:.t hai con l:1e hllng nhau, B. Cli nang dIU cun Idc th(r nh:!t IOn hon. C. C,1 nrlllg cua con lie thir hai )dn hon. D. Chua till dn dr <lti kct ludn. Sit d~mg di) kifn SlIU: M(;r v~11dao d(jng Jif:u hoa thee: lhu(/lIg I rinh x = 12 Sill( IOn! + i) (£111). Trd /(ii cdc diu 4 Ia 5. 4. Chu kl duo <l,)ng I:): A. T = Ss. B. T;:: O,2s. e. T = 2s. D. T;:: lOs. 5 Khi phu euu duo tll)ng hlin!,: 1(, V(llt) v~n tC)l I~I: A. V = -.76Xm/s. B. V = 3.76Xm/s. C. v = -J,76~km/s. D. v = 3,76~km/s.127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 6
  7. 7. WWW.VIETMATHS.COM 6. M{lt con Me don 1..6day treo dai I m {Teo qua nang nhl). B() qua moi rna sal va SUI..c an ella khong khi. Cho g = IOm/s2 . N~lI lay 1t~ = 10 thi khi dao d(mg. chu kl cua con lie la: A. T = 2.s. B. T = J2 s. D. T= Is. 7. Pbiit hi(;u nao sal! day dung? A. Chu ki s(mg la khoang thoi gian song truyen 01r,1c quang d1tong 1m. B. Dai lmjng nghich dao cua chu kl g{.)i Iii d.n St1Clia song. C. V~n tCft:truyen Hang 11ft.fng trong duo d(mg gt.)j h) v~n t6t: cua s(mg. D. Bien U(l duo d(mg cua sung luon htng h5ng stl. H. Trong tn.ttlng hop Ii tu{~ng. song chi truyen theo mN phuung thl nang IU(_:Jng ong se: s A. giiim lilt) vdi (luang (Il((fllg truyen song. B. giam tl It) vtfi hlnh phirong quang dtr{lng truycn song. C. khClIlg hj gii Ill. D. chi hj gi:l m rtil it. 9. Ta i ngu{)n O. phmrng trinh dao d(jng ,diu s(mg iu u = asin (I) l. Phuong trinh duo d(lllg ClW di~m M each 0 melt khoiing OM = J 1<1: A. 2nd J. B . 21td LIM = UMSIIl (t) ( I - -_ . UM = a:1slll( cot - -- ). A . v . 2nd D. UM = uMsm( rot - --). )_ 10. M<)l mang kim loai dao d(mg vdi dn st1 240Hz. No tao fa trong nudc m(){ song am co hltdc song 4m. V~n t6c truyen am trong mrdc lu: A. v = 9fiOm/s. B. v = nOm/so C. v :::;9fiOcm/s. D. v = 6(km/s. 11. Ch{_}1c du dung. Hi~u dit)n the duo d()ng di~lI hoa 1 la hieu uic;n the: A. co dang: u = Ullsin( (I) t + o ). B. luon c() giu tr] duong, C. hicn thicn theo thtfi gian. D. khong d(~i theo thtli gian. 12. Chon cum lu thich hup sau day va diJn van chl} tr(lng cho uung nghia: A. nrc th{fi. B. khong d{ii. C. hieu dung, D. {hay (h~ii.127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 7
  8. 8. WWW.VIETMATHS.COM Cuong dO dong dien dla dong di~n xoay chieu Iii cirong dl) diu dong di<:n khong d(1i khi qua cling v;J_tditn trong cung thoi gian lam toa fa cung nhiet hrong nhir nhau. 13. D6i v(~i doan mach xoay chieu co dien trd thu~n noi tiep vdi tu dien thl di~n nang chi tieu hao tren: A. tu dien. B. dien tnl C. cd tu dien Ian dien trd. D. day n()i gitra t~1di~n va di¢n td1. 14. G9i N I va N~ la sf) vong day ciia cuon so cap va thee cap cuu mot may bien the; U I va U2 Iii hieu di~n the hai dau cuon S<j cap va thu cap. Bi~u thuc nao sau day 13.dung? A ~- N, B UI _Nl C.UIU2=NIN~. D.UINI=U:!N" . . U - Nl . . U~ - NI . 2 Su dung dil kien sau: Cho dong difn xoay chieu qua mach difn g6m cuon day C(J L = 0,4 H va . . n di~n tro R = 30Q mile n61 tiep (hi hifU dien the f,:iila hal dJu di~n tnt R C(l hiiu hue UN = 120.fi sin 100m (V). Trd liJi cdc cdu hi;; 15. 16 va 17.. 15. Cu<ing dO dong dien hieu dung trong mach lu: . A. I = 4A. B. I "" 4 J2 A. C. I = 2,4A. D. 1= 2,4.fi.A. 16. Cong sual lieu thu tren mach Iii: A. p= 120W. B. P = 480W. c. p = 4~W.fi W. D. P = 9nOW. 17. Bi8u thrrc hieu di~n the hai dau cuon day la: A. UI. = 160 J2 sine LOOnl + ~) (V). B. UL = 160.fi sin(lOO1tt - ~) (V). 2 . 7t C. III .= 160sin( IOO1tt + -2 ) (V). D. lIL = 160sin( IOOnt - ~) (V). 2 18. M0l khung day quay quanh true d6i xuug cua no va vuong goc voi lif tnrong voi v~n t6c 1800 vong/phut, TUn s6 dong di~n do khung tao ra la: A. f= 30 Hz. B. f = 1800 Hz. C. f = 60Hz. D. f::: 50Hz.127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012
  9. 9. WWW.VIETMATHS.COM 19. MOt may phat di~n xoay chien c6 4 cap eire, dong dic;n no phat ra co lan ,s650 HI, thl thl !l)to phdi quay vdi vo.n t6c Ill: A. n ::: 750 vong/phut, B. 11 ::: 500 vong/phut. C. n = 1500 vong/phut. D. n ::: 250 vong/phut. 20. Trong mach duo dOng L, C, dien tich cua tu di~n dan dOng hien thien oieu hoa voi tan goc: so ,,- 1 B. JLC . L C .(1)=--. iL A. (,):= -r==. (1):= D. (1)= ,1-. , -vLC C ~c 21. Trong mach dao d(mg L, C. dien tlch eua t1,l di~n hi~n thien theo quy lu~ dang sin then thifi gian thl nang hi(.1ng urc th<1iella t~1 uit;n hien thien theo thoi gian then quy lu~t dang: A. sin. B. eosin. D. coxin . 22. I:)i~n tnrong xoay ia dien tnrong eo cac ultifng sue: A. song song nhau. B. e{) dang tron. e. dung xoay ue, O. buo quanh cal: ult(ing earn ung tif cua tif tnti1ng sinh ra O(). 23. M,!-J.:hduo c.ll;Og cua mOt may thu thanh g()m dit;:n C = 3pF n, va CU(lIl day thudn ciirn. I:)~ mach "hJl" UU1C song A. ::: 30m thl O() tlf cam ella cuon day la: A.8,33.1O-5H. B.8,J3.IO-ClH. e. 8,33. IO-7H. D. 8.33.10 XH. 24. Call nao sau day ·uung,? A. Trong moi tnrong trong sUOl va d{)ng tinh, anh sang truyen theo (flt<ing th~ng. -B. Vi)_ttrong su6t la nhirng v~t cho anh sang truyen qua mOt phan. c. Cit: y~t sang deu uu1c glJi la nguon sang. D. Tia sang la auang thUng. 25. Dicu nao sau day lit dung khi noi ve lang kinh? A. Hai mat hen ella lang kinh luon vuong goc nhau. B. G6c chi0t quang ella lang kinh lu()n nh() hon 9(1).127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012
  10. 10. WWW.VIETMATHS.COM C. Ling kinh la m()t kh<)i chat trong suot hmh liing tru (hIng. di tiet Ji~n thjng I;) melt hinh tam giac. D. Chict sWll cuu Lhal lam lang kinh nh~) hon I. 26. Goi 0 la quang tam. F lu tieu diem V(H cua m()t thiu kinh h()i tu, Di~u nao sau day Iii sai? A. V~t that va .inh lh:;it luon ntm vd hai phia cua than kinh. B. V~llhCtI va anh ao Iufm ni.im ~[; cuug m<)t phia cuu lh::ill kinh. C. V~l th~t V~l anh UI) diu n() )U()Jl ngt((.k· chi011 nhuu. D. V;jl d:jt i.~lieu didm thl anh tf V() cung. Sij dung dil ki~n S(lU: f)(1t IWI 1(11 (hiing IIh() AU vu/ing g()( ",Ji trw eli/nil (jIa m()( g/,(IIng cdu [om {() ban kinh ()(}CIIl 1" each gl((JflX 40 em. { ndm (ten In«: chinh. Tni /iIi cdc ((I il 27 1(/ 2 N. 27. Tinh ch:{t V~l vi 11[ cuu unh Ill.: A. Anh thCtt each girong (iOcm. B. Anh ao each girong 40cm. C. Anh lh~t each glf(fng 120cm. D. Anh ~~vC) cung. 2M. 1:)(> phong l1;,li anh )~I: 1 A. k = 1. B. k = -.1. C. k=-. 3 29. M(lt thau kinh ph:1n ki eli lieu cu f = -K(km. [)~l v~t AB tnrdc thau kinh thi cho iinh n5m (~ V! lri ciich th.fu kinh Im)t kho .l.ng 4(km. Vi tri cua v~t ciich th .l.ll kinh m(lt khoang la: A. J = 40cm. B. J = 80cm. C. J::: 20cm. D. d = 160cm. 30. D{)i vdi may anh. thi: A. V~l kinh co th~ lu mOt thau kinh hOi tv ho;).c thau kinh phan kl. B. Anh thu I.ltn.1c tren phim la anh that, nhi) hon V~l. C. Thoi gian m(~ dra s~p dog )~111 anh chup cang 10 net. thi D. Khoiing each nr V~l kinh l.1ell phim Ifl ct) dinh. 31. Khi quan sat m(ll V~l nh() hhng kinh hlp. tac dung chinh cua kinh hlp Iii: A. lam v~t to len.127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 10
  11. 11. WWW.VIETMATHS.COM H. lam giam khoiing each tit vGl Jen mil. C. tang unfllg kha nang nhin 4:lla md 1. D. lam tang g6(.· trong anh. 32. Dung may unh ma v~t kinh la m(H (hall kinh h()i tu c() tiell qf f Ikm <.10 = chup iinh nl<)l may hay lJ xu. Dc anh re) net. phii.i ui~lI chinh phim each v(lt kinh IlH)t kho.ing: A. d = I (Kill. B. u:;;;; Xcm. c. u =4<.:m. D. d = O,Xm. 33. M<)t nglf(ti c~n thi khi deo kinh <.:6 u() tu -Iup, nglf(li Ilay l() th0 nhln n") vr.1 t g. j n I1h;,11, each milt 25<.:111. K hoan" nhm ni ,,:111 nhLlt cua mrt I 11"lfl"fi v ~ ~ ~ 11~IY khi khllllg cleo kinh lu: A. 4(klll. B. IOOem. C. 20ell1. 0.2un. 34. Khi churn .1n11sung IrUng chieu qua lang kinh thl: A. ufl"fng ll(l churn su ng dlf(_"f<.: t5 ng nfllng. B. churn sang hi tiich ru thauh nhieu rnau sik khac nhau. C. churn sung 1(1 fa chi CIl m(ll mall x ..it: dinh. D. churn sang III ru van Iu churn sang lrdng. 35. Cflu nao sau u.1y sui? A. Co the din clf van quang phe:) vach hap thu <.16nhGn hiet st! l() mar <.:ita m(H nguyen ttl trong h(lIl hop hay IH,1pchat. 13. (j lll() nhi<;L It() I1h::(l diuh. lll() u:.im hoi l,:(l khJ nang phat ra iinh sang (hill sa(; nao lhl no ding d) kha nang hap thu nlurng iinh sang (Mn sik <.16. C. Quang rh(~ vach h.rp thu cii: .. m()i nguyen tel t:o tinh chat (I~l tnmg rieng chn nguyen (tf (1<.). I). Quang phS vach hap thu 10)iinh sang Ill;) ciic nguyen tC; h{{p thu. 36. Hi0u nao sau <.lay sui khi ntli ve ria h(1ng ngoa i? A. Ciic v~tt:t) nhiet U(l cao chi phat ra duy nhat tiu htng ngoai. B, Tia hl1ng ngoui l,;() han lhat lu song <.li~n ICr. C. Tal dung nl~i h;}t nh1t ~ua tia hing ngoui la tal dung nhiet. D. Tiu htlng ngoui 1.:0thJ dung trong chup anh h(1ng ngo ...i. .127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 II
  12. 12. WWW.VIETMATHS.COM 37. Tia Roughen: A. mung llic:n tich duong. B. mung dien rich am. C. khong mang ui9n. D. mang di¢n tich tuy y. S,t d«ng di( ki(n SIIU: Trong thi f1ghi~~111giao thoa vdi khe /c1ng, klwdng each S IS~ = a == -tmm. khollngeach ur Sf Id s~ (ten man quail sur hi I) = 2111. Trd hJi cdc diu 3R V£l 3<). 38. Anh sang chi€"l! vao hai khe co htr(1t.;song A = O,6pm. Khoang van hi: A. i = O.J.10-·m. B. i = (U.I(r ·mm. D. j = 3.IWmm. 39. Chieu van hui khc S I, S~ m(lt iinh sang dlfn sic c6 hL(& s(lng A thl toa ll(J Vall sang h~c J 1a O,75mm. Gia II! hl((1c song A lu: A. A:: O,75.f.lIll. B. f.. = O.25)l1TI.~ C. A = 0,5)1m, D. A = 2,25~Lm.0uvi:::I: 40. Troug hien 1l(,5ng_ quang Jj~n, cleclrtm but ru kh{)i he m~l kim luui khi:l-e::(~ A. c.it: mung tinh the trong kim lna i hj hien dang. .I-UJ B. Urm kim loui hi nung nong Jen nhiet Jl) can.::::0:~~ e. co .iuh sang thich h(.1P chieu Val) no.~ D, tam kim loui hi nhiern di~n do tiep xiic. 41. Trons I:: thi nuoh iem e , v~ tC hao q uang dien, n(ong .,. do donebJuuanuI: die•n hao . hou luon: A. Ii I¢ tnu(lll VI1i ~L((jngd(l churn sang kich thich. B. tll~ nghich vdi n(ing d() Chl101 sang kich thich. C. khong phu thLH)C vao ntifng d(> churn sang kich thich. 0. l[Lng thco lIUY 11I~t hum st) mil v()i cl(jng d(l churn sang kich thich. 42. hong qunng ph(~;nguyen ll~ hYl1rtl th): A. Cac vach tllng day Pasen tl(lng trng v<.1ciic i tun st, khac nhau, B. C;k ·v:,u.:h trong day Pasen uli(Jc tao thanh khi eric electron chuyen tll de lilly duo hen ngoai v0 quy dao M. 127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 12
  13. 13. WWW.VIETMATHS.COM C. Theo quy I.(k thong thtrong, vach s6 1 (tng vdi s~t chuyen cua electron tit quy dao N ve quy duo M. D. Cii A, B vu C r,10u dung. 43. Chieu l:In Ilf(_ft hai h(tl: xa oi~n ttt U"l hirdc s(mg 1 va je van mt)t tam kim loui d~ hien nrong quung oit)n xay ra. Biet v~n ttl(_ han dau qfl: o",i cua cac electron Quang dien urong Ung la v I va v". KhC,i hrong dIU electron OU(.1<:tinh h5ng hiciu thirc: A. rn., = ?hc VI - v; 1 (- "I + _!-J. A~ B m . c = ._~ (_I vi - v~ A,· A~ . 1) C. m; == ,he 1 (_I I ). D. m., = ~hc2 1 (_ I ). v;-v:; AI A2 VI-V~ A, A~ 44. Trong quang pht) hion), de buck song eua mOt s() vach Quang phi) nhu suu: V<:I<.h th(f nhat ciia day Laiman: A~I :::: 0, 1215R6~Lm. vach H" cuu Jay Bunnie: 1...12 :::: ().656279~lm. T5n stl ella vuch quung rh<1 thtl 2 day Lyman la: A. 2.925.10111 Hz. B. 2.925.105 HI.. C. 2.925.10-1 Hz. D. 2.925.I01.l Hz. 45. Cau nao sau day dung! A. Trong hat nhan nguyen tl( (;0 hai 10<,1i nuclon la pnlton va ndlr{lIl. H. H<:It nhau uH(.k: l::fu tau ur de nuclon. C. Trong hat nhan, sf) pri)t6n va s{) notron co the khac nhau. D. Cii A. B va C d~u dung. 46. Chon cfiu sui. Lire hat nhan: A. Ja Il.renrong uic giGa cat: nuclou hen trong hat nhiin. B. co han t:hat lil I~rcdi;n. C. khong phu thu(k vao dien tich ella cac nuclon. D. lil IO<,1i IVl: rnanh nhat trong cac loai luc ou hiet. 47. Cdu nao sau day sui ? A. Khi phong ru khoi ha; nhan, tia anpha t:(l v~n t()c hhng v:}n tcl(.· iinh sang trong chan khong,127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 IJ
  14. 14. WWW.VIETMATHS.COM B. Tia unpha thirc chatla hat nhdn nguyen ll( heJi (~He). C. Khi di trong khong khi, tia anpha lam i(m hoa khong khi va mal dan nang iL(.1ng. D. Khi di LJlIa ui;:n tnrong giua hui han tu llit;n, tia anpha h, lcch vc phiu han ii m ~ua tu ui~n. 48. Chon cau dung. Then de tien lIe ella Anhxtanh thi: A. cac hien untng v;}t H xiiy ra nlur nhuu (t(:)i v(fj rnni h~ LJlIY chieu quiin tinh, B. phtnrng trinh di~n tii de hien tlf(jng v~t li co ding Im)t dang trong moi h~ LIllY chicu quan tinh, e. vJn tell .inh sa ng trong chan khong ~(1i vdi rnoi h~ LIlly chieu 4 uun tinh ~() ding llH)t gia tri c. D. Cii A, B va C (Mu (tung. 49. Nguyen {() radi 2~~ Ra phring xu co chu ki han ru T := 1570 narn. Cho NA = 6.022.1O::~/moL DO phong X".Lella 2J.!g rudi lu: A. H = 0527.IO~ Ci. B. H:= O.Y45.IO" BLJ. C. H = 0.745. JO.i Bq. D. H = 0.745. to:> Ci. 50. Hat a ell khCli h/l.fng mH..: ::;: 4.0015u. Nang h(jng t()U ra khi tao thanh 1mol Hdli lu: A. 2.n.IOI~MeV. B.27.3.IOI"McY. c. 2.n.IOI~J. D. 27.J.IOI~J. t. Khi chat l1i~m duo (t(mg diel! hoa Ih1 i1 vi tri dn h5ng nl) ~e dat: A. vUn tClLq(l lieu. gia tell qrc dai. B. v(ln l6c C~fedai, giu tell c~(l tieLL c. v~n t6c h~ng 0, gia h)C hting O. D. v~n tfic qrc dai, gia tC)c hhng (). 2. Cau nao sau day dung? A. Dao lI(mg di0u hila 1ft hlnh chieu cuu mot vUt ChllY~1l (tOng tron tl~u x:ut)ng IlH)t ~lr(111gth.1ng hat ki.127.0.0.1 d14wnloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 o
  15. 15. WWW.VIETMATHS.COM B. Khi chat diem chuyen d(mg dlt~lc m()l vong thi v;J( duo (h)ng di~u hou tuong (rng di t1U(.lCquang Ilt(lng hhng hai bien d(l, e. Khi chat (ficm chuyen d()ng tren dU("fng tron thi hinh chicu ciia no tren m(l( true la m<)t duo d(mg di~u hoa. D. Hlnh chieu ella mot ch[{t (ficm chuycil d(mg tron OCli xUclng melt true lam(lt duo u(m!! di~u hila. 3. Mot con lift: hl X() duo d(mg lli~u hou Cl <.:(1 nang loa 11 phan W. Ket luan nao sau day If} sui? A. C(f nang W luon khong (lSi. B. Tai vi tri hicn: The nang hUng W. e. Tai vi Ir! hal kl: D()ng nang Wn hun W. D. Tai vi lrt <.:<inhJ.ng: D(mg nang hang W. Sii dung dil kirn scm:~ M(H v4t kh/;i lucmg m treo (10 m()llii xo C() d(J cung II.. Kich thich cho )!{If daoa~ d(mg l(fj bien d(J Scm thi chu ki duo d(mg cua J1(1 lei T = O,2s.::I:~ Trd [(,i cue diu 4 Illl 5.~u 4. Trong I s, lUI thirc hien: A. 0,2 duo c.1()ng. B. 5 dao <.lOng. C. 1.6 duo (f(mg. D. 20 dao dOng. 5. Neu kich thich cho v~t duo d(mg v(~i bien d(l duo d(lIlg 16 em thl chu kl duo u(mg diU no ~0: A. (lAs. n.o.rs. e. O,2s. D.o,2fi s. 6. M(lt v~t thuc bien d(ng thoi hai duo c.1(mg cung l.in s[{ goc W = 4nrad/s, co cuug bien of) A ::::3cm . va co phu han (.1;111nn I htd. la () va ~. t 2 Phuong trinh duo u(mg t(~ng h(.1P la: A. x = 3sin(4nt + ~) (em). B. x = 6sin(4nl + ~) (COl). 4 4 e. x = J J2 sill(41tt + 2: ) (ern). D. x= .J3 sin(4m . + ~ ) (ern). 4 4 127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 15
  16. 16. WWW.VIETMATHS.COM 7. Song co h9C la sif Ian truyen theo thdi gian eua A. cac phdn til v<Jt chfit~ B. V;)t chilt trong khong gian. C. dao dOng (;(1 hoc trong mot rnoi tnrong V~I chef!. D. bien de) dao dOng trong mOt ruoi tnrong V~l chit. 8. Ciiu nao sau day dung? A. Khi song truyen Ill m(ll ngu6n diGm trong khong ginn. nan~ hJ.lng song giarn ti I~ vdi quang dL(fng truyeu ,(mg. B. Qua trlnh truyen song Ii! qua trmh truyen nang ILfl.fng. C. Khi song truyen tU m(lt ngudn di~m t,ren mat phing, nang hrong song giarn t11~ vdi blnh phirong quang dul1ng truyen song. D. Trong khi song truyen di thi nang 1u<Jngvan khong truyen di VI no la dai h.n.1ng han toano 9. Goi v la v~n t6e truy~n song, T III chu kl va f la tan s6 cua song. Cong thirc tinh hLJoc song la: A. A = vf. B. A = vT. C• A. = -V. T 10. Tai di~m 0 tren mat mrdc, com(lt ngudn song dao dOng theo phirong th~ng dung voi chu kl T = O,4s. Tir 0 co nhimg gon song tron Ian rOng ra xung quanh, khoang each giQa hai gc;1n song ke tiep la l Scrn. V<}n t?,e truyen song tren m~t m(($c la: A. v = 7,2em/s. B. v = 22,5cm/s. C. v = 45t:m/s. D. v = 3,6em/s. 11. Trong may phat rJi~n, hieu di~n the duo o()ng dieu hoa ilion co t5n sf) hang: A. 50 Hz. B. 60 Hz. c. dn s(, ella khung day khi no quay trong tl( trLJl1ng .. D. gap hai Ian tfin sf) cuu khung day khi no quay trong Ill tnrong. 12. G<_JUII la bien d0 hieu dien the. Hieu di~n the hieu dung la: i A. U= UII• B U= V .. . ../2 c. u = J2 u, D. U = 2U(I. 2127.0.16.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 0
  17. 17. WWW_VIETMATHS_COM 13. Trong mach dien xoay chieu R, L va C n6i tiep, vdi col, = (J)~ Hieu di~n the hai ditu doan mach La u = Uusin (l) t. Bieu tht1c dong di~n trong mach co dang: A_ i = Iisin( 0) t + ~ ) (A)_ B_ i = Iosin( (t) t - ~) (A)_ 2 2 C. i = I.sin (J) t (A). D. i = Iosin( (J) t + n) (A)_ 14. Dong di~n xoay chieu ba pha Iii h~ thong ba dong dien xoay chieu m9t pha: A_ co cung bien dQ_ B. co cling tfin sf). C. lech pha nhau m(ll goc 120". D. 01 A, B va C. 15. MQl dong dien xoay chieu co bieu thirc: i = 12 J2 sin ( lOO1tt+ ~) (A). Kct luun nan sau day Iii sui? 1t A.I::o 12A. B. f = IOOH/ .. C.I" = 12-J2 A. D.<p=-. 2 Su dung dil ki~n sou: Dc;it wio hoi dau doan mach g($m cuon day C(J tJ(; tu cam L va d;~n tn} thudn R = 80.(}mtic n/{i filp m(j[ hi~u dien thfxooy chiPu (() tri hieu dung U = ~ ~j- 16()V . tu n so ::0 t::(H tie h~ so conu suat cua mac h h h ~ h -, ta tJ J2 -. . _,) ~ • ("I • 2 r-a hli cdc cdu heli 16, 17 va 18. 16. Cam khang cua cuon day co gia tri la: A. so 12 n_ B. 80n. c. 40J2 n D.40n. 17. Cmtng U(l Jong dien hieu dung trong mach Iii: A. 1== 2J2 A. B_ I = J2A_ c. I = 2A. D.I = J2 A. 2 18. Neu coi pha ban dau cua hieu dit;n the bhng 0 thl hi€u thirc dong dien trong mach Iii: A. i = 2 -J2 sin( I (){)7tl + ~ ) (A). B. i = 2sin( IOO7tt + ~) (A). 4 4127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 17 20 DE TRAC NGHIEM T.SINH_ VAT LY _ 2
  18. 18. WWW.VIETMATHS.COM C . .1-= 2sm(JOOnt - -)t (A). 1 D. i -= 212 sin( WOnt - ~) (A) . 4 4 19. M(ll hien the co cuon so cap mac vao mang t1i~n llOV, cuon thrr cap c6 5000 vong lay ra hieu di~n the 22()V. S() vong day cua cuon s(f cap la: A. 2500 voug. B. 1.0000 vong. C. 5000 vong. D. 1250 voug. 20. Trong much duo u(}ng LC. ui~n tich cua 11 dien hien thien then lilly lu~t: A. ham s()!TID thco thoi gian. B. ham s()h~L nh.lt u(}i v(~i Ihm gian. C. ham sC,hijL hai ui,i vdi thoi gian. D. dan u(mg <.ti~lI hoa vdi l.in s{)goc (J) -= ~. vLC 21. Dan J()ng uic;n nr trong mach duo lh)ng LC (h.lfc cui ia duo U(lllg 1( do VI: A. dien rich cua tu lIi(:n C(l th~ chuydn J(mg lIf do.~ B. nang ILf~1nglti~ntn(("1ng chi t~ p trung (j II,! di(:n.0~::c C. nang h.lfng tif tntong chi t~p trung {~Cll()n earnVl-:(~ D. chu kl duo J()ng chi phu thu(k nhiing d~c tinh cua mach. - U 22. M()t mach duo u<)ng gl~m c(> cuon day L thudn di~n cam va 11 ui(.n C ::$ thudn dung kluing. Nell goi Illla~ hi dong uit;n cue d~i trong much, hi~ll$$ lti;n the eire da i UCnmx tinh h(~i: B. U(",~, = ~ I",~,. c. U (Ill", == ~ ~ .1 no... . D. UCm~ = ~. 1":0 23. Mach duo ll(jng mOt may thu thunh g(1m tu uic;n C va cuon day co dl:.l d() tt_( ciim L = 1O·~H. 90 111:,l<:h "h:i[" Ul((_1c s6ng A == 25m Ihlllic;l1 dung cuu tu Ji~1l i<l: A. 1,76.JO 1°F. B. 1,7n.IO IIF. C. L76.10":F. D. 1,76.10 I1F. 24. Cau nan sau day sui? A. Churn sang song song 101churn (..(J ciic tia sang song song nhau. B. Churn sang he,; tu lit chum tia luning vt? m()t diem. 127.0.0.11downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 8
  19. 19. WWW.VIETMATHS.COM C. Churn sang phdn kll~1 churn tia XlI:,fl phiit lir 1111)1diC"lll. D. Chum sang hcp Ih~(t: i:hal Ju mot ria sang. 25. Trong s~( tao anh qua guung du h)m thl: A. V~t th4t cho £lnh th~t. v~t an cho anh iio. B. V(i.1 va iinh luon c() kich thmtc hhng nhuu. C. V~I va .inh lUllll dln~ l.hidu, D. V~I th .}t cho :lnh iiI) nell v~t th(tt nhm trong khodng gil(a ticu uiem va . drnh gtrong. 26. Gui n., 11.: 1:1chict sufit UY~1 (1(;i ciia ell m(li tnfilng ( J) va (2); VI vil v~ la v~n I()l .iuh sallg Htdng (fng trong cal: rnoi Inflfng It{l. c I:), v.}n tC)t: t:U~1 iiuh sung trong cluin khl)ng: n:1 I:), ehiet su::it Ii dCli llb mel] tnflfng (::!) xu (ji mel] tnrljng ( ! l: III ~ lil chiel suat Ii dCli llia mtli Inrljng ( I) Sll vl"i 1I11)j Inrlflll,!. (2). Bi~l1 tlurc HaU xau lluy I~lsui?~ e v, A.llel= .... Cnl:= D.Il I .:=0 " ~Vl I::c - :( 27. Chicu Ii .. (("i SI V£IU 1ll1)1 glfting phjng cho li~1 pluiu X,.• IR, ChI) glfling~ phdng quay nll)t g(ll (.( quunh m()1 true vlItlllg g.ll: (1i Ill;}t piling I($i va - U :: t1i qua llicm l<li, Ii .. ph.in ,.1 quay nHyl g ..K: .. .$$ (J. u$ A. --. ..., B. -, cz«. O,4u, 4 2M. 0<)1 ~I AB l!lng goc vdi true chinh cua m()1 th:(u kinh hl)i tu, c.ich th1u kinh 60 C111. Anh lLia V~l EI iinh Ih~l can hltng 41 AB. Ticu q( <:lla thilU kinh I~I: A. f = 20llli. B. r::: 60em. c. f = 30(.111. D. f= l Scrn. 29. l:)~t v~t AB tntllc thall kinh (.,(l m()t nult ph:1ng. m(ll lll~t Iij va each thall kin h ~4 em, cho £t nh iiu AI B I = 2All, N0"t1 chic suat l:U:.l lhall kinh Ii:! 1.5 thl tiell n_( V~l han kinh cling cuu Ih[(u kinh hill Il(I,lI lu: A, f = 4XClll. R = 24Lm; B. f = 44(.111. R ::::22Lm: C. f = 24(;111, R = 4~km; D. r:::: 4g <:111,R = -:4(;111, 30. Di~m cue c~n ciiu mftt la: A. diem <:0vi trt each mat lit l Scm JCIl 20cm. 127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012
  20. 20. WWW.VIETMATHS.COMJI)
  21. 21. WWW.VIETMATHS.COM B. Jic3m gfin mat nhat rna khi d<)t V~l tai d6 milt con c6 th6 th.1y roo C. diEm xu milt nhilt rna khi d~t v~t tai oc) mdr con co the thiiy roo D. diQm rna mift c6 thE nhln thay 1"(1nhill. 31. Khi sli dung kinh hidn vi trong trang th:ii n!_!iim chimg l1 vo cue thl: A. anh cu~)i cung cua v~t dn quan siit quu kinh la anh ao nlim (~Vl) cue. B. miit quan sal khong dn phdi diet! t.01. C. l1l) h~)i gi:h: tinh he)i cdng ttt((c (i,_ ~DI (vdi 11 va f:_ la tieu cu cua v~t := 11 ! kinh va thi kinh: D I~ khodng nhm nl ngan nhflt cua mdt; 0 la u() dai qua ng hoc ciia kinh). D. CJ A. B V£I C dell dung. SLidl:lng Ja ki~n sou: M/i! IIgl(/li ("{_In th] chi din nhin rtJ nhting ~il ndm trong kh()(ln/-:each IIId! lIt O. -+ 11/ d (;n O. 8 11/. Trd hli cue diu 32 (/ 33. 32. De nhin 1"(1nhung V~l rat xa rna milt khtmg phili uieu tiet ngl1i1i ay phai deo kinh c{i d(l tu: A. - 1.25 diop B. 1.250it)p C. -2.5 diClp D. 2.5 ditlp. 33. Dc nhin [(1 V<}l gan nh(lt each mift 25cm. ngt(ijj ay phai deo kinh co (J() tl,l h~ng: A. 2.5 ui()p. B. J.5 ui{>p. C. 2.25 uiop. D. 2.55di(lp. 34. Trong quang rh{~cua anh sang tdng co: A. hay mau c(fhiin: l1(). da cam. vang, luc, Iam, (ham. tim. B. ch] c{) biiy mall: U(), da cam, yang. Il.U:. lam. churn. tim. e. chi c(i ha mu tI I.:{f hJ n: dt). It.IC va tim. D. chi d) mot mall tdng. 35. Trung hien urong giuo thou, van sang tren man la t~p hop cac (Ji~m co hieu l1t({fng di tir hui ngwin phiit s(Jng dell tli0m do hling: A. Illl)1 hl{lk S(lIlg. B. IlH)t sf; nguyen Ian ella hl1(1c song. C. tnl)t mra ht(& song. D. m<)t stlle lun cua Ilita htt& song.127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 20
  22. 22. WWW.VIETMATHS.COM Luu chon rhl cua ctu: hue xu .sail: " . . A. tia h(JnK ngoai. /J. tia lit ngoai. C. tiu Ronghen. D. dnh sling nhin thd». nu» IUO eMf tf"()ng trong cdc cdu 36 vd 37 cho phil hap. 36 I;) birc X<;I khong nhln [hay dmrc. l() hl((1c song ngun h{$11 hu(ll,; s6ng t"LII.!anh sang. lim (OAO urn). 37 1<) birc X~ khong nhln lh:1y dU<)l, c() ht(lk s(mg IOn hun hu(1<.: s(lIlg lLIJ. .inh ....i.rlg. 1M (0,75 urn). Sit dung dl1 ki~1l .{IU: Trang thi nghifm giao thou Wli khe ldng khodllK each SIS:! = a = 3mm, khoclng Clich lif S, WI S_!den man quan sat lit /) = 3m. AnI! sung chilu vuo ctu: killS, Ill ScCli buac song A. = 0.4 Jim. Tn] 1/1;cac cdu 38 Ill 39. 38. Khoiing van I;): A. i = 0.4.10 .1m. B. i = 0,4.1O-3mm. e. i = 4.10 -1m. D. i.::= 4.1O--1mm. 39. Toa d0 van lC,ih~c 4 (k:::: 3) la: A-IXI- • ) ._. to m. B. XI = 0,9. J() .1m. C. XI = 1.4.1o--m. D. XI = 1,4. IO-.1mm. 40. Hien It(<_"lng quang di~n chi xdy ra dt)i vdi: A: kim loui ell nguyen ILi hrong IOn. B. ki rn 10<;1 i c() hoa tri WIl. e. moi kim loai, mien la anh sang kich thich co birdc song nht) hon hoac hftng gi(1i hun quang tlit;n cuu kim loai <16. D. kim lua i ell khC;i It((.lng rieng IOn. 41. Ki hieu c 1<)dien tich electron, Uhla hi~u (1it;n the ham, m va Vo bin iUl.1t I~ kh()i Il((}ng YU v~n tell han dau qtc dai ella electron quang oit;n. Khi dong quaug lli~n triet lieu tht:127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 21
  23. 23. WWW_VIETMATHS_COM D - LU h _ 111 ----", II",.. , 2 42. Cal: vach trong day Luiman thuoc vung: A. tLt ngua i. B. h<1ng nguui. C. anh sang nhln thay, D. nH)t phan n5m trong vung anh sang nhln thay. m<)t ph£ln n5m trong vung Ii! ngoai. Sa dl;lnK dil kitJn sau: Cl)ng hod elecr/;n eua kim IO(_JdunK film car/;r CUll i III(}( Ie bao quang dien hi A = 6,625,10 II) 1. TriJ hli cue diu 43 )11 44_ 43. Gidi han quung dien cua kim loai dung lam cah1t la: A. 1..0 = O.15)-lffi. B. 1..0 = O.3I-tn1. C. )1 = O.36~lm. D. x, = O,625I-llll. 44. Neu chieu lun I[((.ftvao le hall quang uic;n n~y de hul.: xa co nhung hl(k song: AI = O. n~5I-lm, A~ = O.246)-lnl, 11.1 = O,2~7)-lm, A~ = O.J24I-lm, 1..5 = 0.450)-lm Ih. nhirng biic xa gay ullk hit;1l tl(.1ng quung oi~n la: A. AI va A~. B, 1..1,1...1 va A_ 45. Cau nuo sau day dung? A_ Nguyen ll( g(~m ni(ll hat nhtln (~gifta va xung quunh la cac electron. B. C6 thE d) nguyen tii chua hai hat nhfin ben trong. C. Trong nguyen It(, S( electron lutm thay c.1l;i. D. Trong nguyen llr, khoi hrong hat nhan vao ell khtli lu(.1ng electron. 46. Nguyen tir ctiu ciic hat nhan u()ng vi l<i ding: A. sC; electron Wp ngoai, B. khClj Itf(_1ng hat nhfin. C. khCli hrung nguyen tu. D_ sc) notron trong hat nhiin 47. Khi di qua di~1l tniffng giOa hai ban t~ dicn, tia heta l{)ng sc:127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 22
  24. 24. WWW.VIETMATHS.COM A. khong hi lech. B. hi It;ch v~ phia hun am .. C. hi I~ch v~ phia han dlfl1ng. D. hie dau hi lech v~ phla han am. suu d6 I~ch v~ phia han dunng. 48. Trong phan ung hat nhan day chuyen thl: A. s6 phan hach Im)n khong dGi. B. khi ht; Sl) nhan ruttrrm kln hon I. con ngtfoi khong th6 kh()ng ch€ dtf<Jc phdn ling day chuyen . . C. khi ht; sf{ n han notron n htl hon I. con ngtfoi co th~ kh()ng che dtf(jc phan ling day chuyen. D. Ca A. B va C d~u dung. Sit dung da kifll sau: Chu n ban -a cuu :!;~u ta T = 4.5.109 ndm. Lric dau co I gam ~ 2;:~u nguyen chdt. Trd hii cdc cdu hiJi 4:) V(I 50. 49. So"hat nhan han dall cua U23g lu: A. Nil = 2,53.1023 hat. B. No = O,253.1O~ hat. C. Nu = 25.3.10 21 hat, D. No = 2.53.1 ()21 hat. 50. Sau 9.101 narn, d<) phong xu cua 2;:~U lit: A. H = 8830 Bq. B. H = 30gS Bq. c. H = 3808 ct. D. H = 3088 Ci. I. Trong dao d(lOg (lieu hou, vGn t6"c cua chftt di6m bien thien dC)i v(fi thl1i gian thco quy lu~t: A. ham sf) mu. B. ham s6" dang sin ho~(.; eosin. .C. hum s6 h~c nhaL D. ham sf)"h~c hai. 2. Trong duo d(mg dieu hoa ella con Hfe don, co nang cua con hie luon:127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 23
  25. 25. WWW.VIETMATHS.COM A. bang dong nang ciia vi,it khi vat l1 v] tri can bllng. B. bang the nang cua vi,it khi vi).t tl vi trt bien. e. ldn hon d9ng nang cua vi).t (J vi trl btt kl. D. ldn hen the nang (J mot vi tri bit kl. 3. Hai dao.dong (lieu hoa cimg tin sa, ngiroc pha, Tai cung mOt th(jj diEm, vecto v~n toe cua chang luon: A. cung dO ldn. B. cimg chieu. e. nguoc chien. D, vuong goc nhau. Sit dung dil ki~n sau: Mt)t Vi;,t dao dQng diiu hoa vdi bien dQ A ;", JOem va t&n s// f = 2Hz, Ntu chon true Ox trung vdi phuang duo dQng, goc 0 trung vdi vi tri can bang, g{/c thifi gian fa luc v4t dat li at) Cl:IC dai duong. Trd lai cdc cdu 4 va 5, 4. Phuong trlnh dao d(>ng cua v~t la:~0u A. X:::IOSin(41tt-i) (em). B, X=IOSjn(41tt+~) (em),vi:c-:::(~- e. x ::: lOsin4~t (em), D. x = 10 sin (41tt + n) (em).I...I::::: 5. Phuong trlnh v~n toe cua v~t fa:s:s:5: A. v = 407rCOS( 47rt - ;) (em/s). B, v = 40JrCOS( 4m + ;) (cm/s), C, v = 40ifcos4Jrl (cmls), D. v = 401icos( 47Tt + Jr) (cm/s). 6. MQt con lAc 10 xo gam v~t nang treo uUdi m(>t 10 xo dai, chu kl dao dOng cua con l:lc la T. Neu 10 xo bi dt bot mot nu-a roi dung rnra con lai dt1 treo v~t thl chu kl dao d9ng cua con uk Ill: - A. T::: 2T. B, T = T, C. TI ::: ,,r2 T, ;::; 2 7. Cau nao sau day dung? A. Chu ki chung cila cac ph5n III co song truyen qua goi Iii chu kl duo dOng cua song, B. Dai hrong nghich dao cua chu kl goi la t~n st) goc cua song, e. V~n t6( truyen nang 1U<Jng trong dao d(mg goi la v~n .t6c cua song. 127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 24
  26. 26. WWW_VIETMATHS_COM D_ Bien dQ dao doug cua s()ng luon hhng hhng s{{. 8. Tren cung melt phuong truyen song. neu khoang each giua hai di~m A va B hilng mi)t SClnguyen l:in cua hutk song thl so vdi dan d(lIlg tai B, dao d(mg tai A se: A. cung pha. B. ngl((_k pha. C. nhanh pha hun m(lt goc ~. D. cham pha hon m6t g6c~ - - 2 9. G9i I lit gia tr] tuyet dtli cua cutfng d(l am; lola cl((fng 0(> am chuan. Bi~u . thirc cuu rmrc ntang oQ am Iii: I I - A. L(B) = 19~. B. L(B) = In-. D. L(B) = 19-. I III . III 10. Dung biia go manh xuong durmg ray xe Ilia. Cach chO do (200m, mot ngu0i ap lui xuong du<1ng ray nghe ro tieng go truyen qua du(fng ray, nhung 3 giay sau mdi nghe lhay licng go lruyen qua khong khi. Hicl v~nau ) ttl.:truyen am trong khong khi Iii 340m/s, v(in t6"( truyen am trong thcp:I:- lam du(1ng ray la::(- 20U A. - m/s. B. 400m/s. C. 2266,67m/s. D. 1020m/s.:: 3ss 11. Hieu di~n the dao d(mg di~u hou III hieu di~n the hien thien theo th<1iS gian then quy luat: A. ham SCIh<J_cnhat. B. ham st)b(ic hai. C. ham sc) dang sin hoac eosin. D. ham sOmu. 12. Cuong de) dong dien hieu dung cua dong di~n xoay chieu hling: A. cltong O(l cua dong di~n khong <.l6i ma neu chung di qua cung m()t di~n tr(~ trong thdi gian nhu nhau [hi se li)a ra nhiet 1u(.1ngb~ng nhau. H. gia tri Wn nhSt eua dong dien trong m<)t chu ki. C. gia tri trung binh cua dong oic:n trong m()t chu kl. D_ gja trj nho nhat cuu dong dien trong m<)t chu ki. 13. Chon cum tit thich hop sau day de oi0n val) ch() tr()ng cho thanh cau dung y nghla v~t [i: A. tan s6 H_ pha. C. chu kl D_ bien d<). 127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 25
  27. 27. WWW.VIETMATHS.COM Trong UO~1l mach xoay chieu chi co ui~n ldf thu.}n thi hieu ui~n [he giua hai uau doan mach co th~ khong cung v($i nftfng u() dong dien. 14. Trong l5u tao ella may phiit ui~n xoay chieu ba pha thr: A. de cuon day co thti mdc then kiciu hinh suo. B. c:1I.: cuon ddy co th6 mdc then kitiu hinh tam giac, C. ba t:u(m day gi()ng nhau, he) tri I(:ch nhau * V{))1g tron tren stuto. D. A. B va C U0U (lung. 15. Dl}t vao hui dfiu di~n tn) R ::::50 .0 melt hieu ui~n [he xoay chien t:{l hi0u thtrc: u = 100.J2 sin 1OOnt (V). Bi~lIthue dong <.1i~nlu: A. i ::2s: IOOnt (A). : in B. i = J2 sin 100nl (A). C. i:::: 2/"i sinlOO:rct (A). D. i = 2 J2 sin( IOOnt + ~) (A). 2 , 1 M()f doan mach x()m tu di~n C va (,wjn day u; d() I{I cam L :::: - H mac n n(;i fiel]. f)(if li(/O hai dau doan mach /Ill}1 hifU di~n fhp.way (.hi(~u C() U = 50V. I= 50H::. thi dong difn trong mach lei 1-= IA IU chdm pha han hifu clii ?n the mo t !I()c ~ • . . " 2 TrJ Itll ca« cdu h(;; I (j, 17 1·cl 18. 16. Dung khang ciiu tu dien la: A. SOn. B. soh o. C. 200.fi n D.200n. 17. Cong sllallicu thu tren mach: A. P=50W. B. p:::: 150W. c. p = 200W. D. P=O. 18. Bi~lI lh((<.d ong di~n trong mach lu: : A. i = J2 sin( IO()7t( + ~ ) (A). B. i = 2sin I OOnl (A). 2 c. j = .Ji sin( I ()()nl - ~) (A). D. i == 2sin( WOnt + ~) fA). 2 2127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 26
  28. 28. WWW.VIETMATHS.COM 19. M()! dl}ng c:< 1 kht)ng dt1ng h() ha pha (lall theo hinh sao vao m()l mung dien ba pha co hicu dien the tlJ y 3XOV. D(mg (,;t1 co dmg suat 4.8 KW va cos qJ = 0.85. Cuong d(l dtlOg (Ji<;ll chay qua d(mg (,;(1Ia: A. I = 8,S6A. B. I = 25,6HA. C.I= 12A. D. I = 4.28A. 20. Dan ll(lng ui~n Itt trong mach dao dl)ng LC luon di&n ra qua trlnh bien lll~: i ; A. khong tu.ln hOUIl cua dit;n tich tren 11.) di~n. B. theo quy 11I~l ham sf{ mf CUll eutlng dlj d{mg (lj~n trong mach. C. (uGn hoan gi [ra nang h(t.fng ui(:n tnfong va nang ILfl.fng ttt tnftlng. D. Cit A. B, C d~u dung. 21. Then Macxoen. khi di~n tnmng cum (tng ton tai trong khong gian thl: A. nhat thiet phiii co v~t dan h~ng kim loai.~ B. khong d.n t.:l) day dan.auvi e. kh6ng gian lto phili I;) chan khong.::I:<X: D. kh()Jlg gian d6 phai t.:o ciic hat mung dit;:n.I-~ - U 22. Tui moi thoi diem, nang hrong cua mach dao d(mg luun bang:>.:S: B. Q.,. 1 ,S: D. - L(I)Q~$ 2C 2 23. Mach duo u<)ng cuu mt)t may thu thunh gtm tu di<;n Ct) di~n dung hien thien dlf(.fc trong khoiing lIT0,2H2mF den 2.~2mF va ClI(JIl day co u() III earn L = 10 5H. Mach nay c() the: "h51" Ul({;1C song c() hlf<k song ntim trong khodng: A. tu Im den 10m. B, tir 316,4m den IOOOOOm. C. ur 100m ucn 1000m. D. Itt IOOOm Jen IOOOOm.· 24. Theo djnh JlI~1 phan xa anh sang thl tiu phan xa va tia toi lunn : A. dlOg phuung. B. ngl(.jc chieu, e. vuong goc nhau. D. hop m~t phdn xa nhirng goc hftng nhau. 25. Dieu nao sau day la sai khi noi ve I~O anh qua guong diu 10m? A. V ~t th~ t c() thti cho anh th;}t h()~c nh an.a B. V~l V~t iinh c() th<i co kich thmrc hhng nhau. 127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012
  29. 29. WWW.VIETMATHS.COM 27
  30. 30. WWW.VIETMATHS.COM C. Y:}t va anh luon cling tinh ch:1t. D. V~l ao Iuon cho anh th~l. 26. E>0 hien urong phan xa roan phan co the xay ra thl: A. Goc tdi phai dat ~Oll. B. Goc rdi phai r:1t ldn. e. Anh sang phai rruyen tir rnoi tnrong chiet quang hon sung rnoi In(ong kern chiet quang ht111. D. Goc tdi phiii rat nhi). Sit dung dil ki~n sau: Dijl mot vcJI thdng nho AB vu/ing gr5c vdi true chinn eua m(!t guang cdu lom C() han kinh (j()cm va each guong 50cm. A ndm tren trw: chinh. T"ii lili cdc diu 27, va 2~. 27. Tinh ch[Lt va vi tri ciia anh fa: A. Anh th.;1( each guong 75cm. B. Anh au each girong oOem. C. Anh thdt each girong 50em. D. Anh (1 VO cling. 28. Ket lu(ln nao.sau day la <lung khi noi ve sir nrong quan giDa anh va v~t? A. Anh th{il, nglt(.1c chieu, IOn g:1p 1,5 Ian v~l. B. Anh :.lO, cung chieu, IOn g[ip 1,5 Ian V~L C. Anh lh~t, ngtfc}c chieu, nho hen v~t 1,5 Ian. D. Anh ao, ngt(~ie chieu, ktn gap 1,5 I~n v4t. 29. I)~l v(tt AB vuong g()C vdi true chinh ella m(lt Ihall kinh h()i (1,1, each lhall kinh 46cnl. Anh ciiu v~t c6 vi tri u({i xung vdi v~t qua thflll kinh. Tieu cl! cua th.:iu kinh 1:1: A. f= 23elTI. 8. f = 46cm. C. f::: 92em. D. f= II,Scm. 30. Khi chup anh, d~ cho <lnh eua v;)t dn chup hien [(J net tren phim, dn phai <lj~u chlnh may hang each: A. gilt phim CCl dinh, dieu chlnh d() tu cua v~t kinh, B. gilt phirn cCi dinh, thay <ltii vi tri dIU ~( kinh. C. giu v~t kinh c({dinh, thay <l6i vi trf phim. D. dich chuyen d v~t kinh 150 phim.127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012
  31. 31. WWW_VIETMATHS_COM31. 80 h()i giac cua kinh hip Iii. tl sC)giua: A_ (it) can ciia anh v{1i U(l can cua V~L B. g{lC IrClIlg a nh voi U(l cao ciia anh. C _ got.: trong anh vdi g{)(; trnng true tiC"r v~t khi vat o~t tai diem cue c{in. D. khoang nhin ro ngdn nhat cua milt vdi lieu elf cua kinh.32. M(lt ngt((fi dn thi phiii dco sat rndt mC>tkinh co d<) tu -2 oiop mdi nhln f{") Ot(_"-: c.ic v~t narn erich mdt Iu 25em ucn vo LVe. Gidi han thfiy ro ciia mjl khi khong deo kinh la: A_ Tli 166,7cm uen SOLIn_ B. Tit 16.67m tlen 50m. C. Tir 16.67em dcn 50eln. D. Tir 1.667Lm den 50m.33. M(ll ngu{1i mit khong eo t{it quan sat mot chorn sao qua llH)t kinh thien van trong trang thai khong diell tiet. V<}t kinh dl tieu C~( 96em, thi kinh c{i tieu q( 1c01. D(l ht)i gi:h:Clia anh Iii: A_ G =4X. B_ G = 96_ c. G = 2_ D. G = 1<)2_34. Call nao sau day sui? A_ Hien Itf(_fng tun S~l: anh sang If} hien nrong khi qua lang kinh, chum sang tr~ng hi tach ra thanh nhicll churn sang e6 mau sifc khac nhau. B_ Mtli anh sang ulin sj_e ell m()t mau nhat dinh. C. Anh sang trifng e6 mau trlfng_ D_ Trong quang ph5 cuu anh sang trang c{l vt) s() de auh sang don sc1c khac nhau.35. Trong hit;n w(,Jllg giao thou unh sang vdi hui khe SI va s~.gt_li A tel ht({jc S{lIlg iinh sang. k tel m(ll s(; nguyen. Neu t,-_Ii A tel m(lt van sang thi: A.SA-S,A=k~_ - 236. Cilu nao sau day sui? A. Quang pho lien tuc 1:1uhirng vach mall hicn trell mot neu tcli. B_ Quang ph(; liL-n rue khong phu thU(K Vall thanh rh~n l:au tuo ella ngu6n sang.127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012
  32. 32. WWW.VIETMATHS.COM C. Quang phS lien tuc phu thuoc van nhiet <.10 cua nguon sang. D. Quang rht~ lien tuc do de v<}.tn1n, long h()~e khi c() tl kh{jj ldn khi hi nung nong ph.it ra. 37. Tia tlf ngou i (M}<.: pluit hien nht1 phuong pilar: A. Chl.IP anh. B. quang <.1i~n. C. nhiet dien. D. ca A, B va C. Sit dung clil ki~n sau: Trang thi Ilghi~m giao thoa vdi khe fling, (Juan slit cho tho:} trong pham vi giil{l hui tlifm M, N tt//i .nfng nhau qua vdn sling (rung t/im (.()71tln sung, tai M Il/ N 1(1 hai "LIn sdng. nii;! MN = JI/1IJl, Tni hli cue cdu 38 )·u 3Y. 38. D() n)ng khodng van Ii!: A, i = O,5~lm. B. i :::O.5mm, C. i:::: 0.5<.:111. D. i:::: 0,5mm. 39. Van sang t;,l i vi tri M I;) van sang l(ng vui: A. k = 6. B. k = J. C. k = 0, D. k = -6. 40. Goi A to) ol.(tk s6ng cua anh sang kich thich, A" 1[1gil~i han quang di~n cua mot kim lua i nao d6. Hien nrong quang dj~n chi dy fa khi: A. A> A". B, /...=A". D. A :5 A,. •. 41. Dt{i vdi iinh sang. neu hltt1c song cang dai thl ding de: A. gay lac Jl}og quang diC:n. B. gay hien tut.1ng giao thoa. c. gay uic dung itlll hriu va pluit quang, D. uam xuyen. 42. Ctic vach Lmng Jay Pasen lhu()c vung: A. llr ngoui. B. hling ngoai. C. iinh sa ng uhln th[(y. D. m()t phjn nllm trong vung anh sang nhin thiry. m()t philn n5m trong vung tl( ngoa i. SIt dung dil k;~n :HlU; G)II~ thadt electron Clla kim 1()~IIdung him call), hi I,R ev Chiiu lido catdt dnh sang C() hUlk song A === 0,4 j.un .. Tri.i /(Ii cdc dill 43 vd 44.127.00 3 .0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012
  33. 33. WWW.VIETMATHS.COM 43. Gidi han quang di~n cua kim loai neu tren 1ft: A. AI) = O,69Ilm. B. All == O,(6)lm. C. Ao = O,63~lm. D. All == O.4)lm. 44. VO-n tC)1:Cl_(<d ai diu clel:lron : thoiit ra khoi cat()l I;): A. v lll .. x = 6,7.IO·m/s. B. Vll"X == 6.7.10 sm/s. C. Vmax = 6.7.IOhm/s. D. Villi" == 6,7.10- "m/s, 45. Hat nhan nguyen lit OLt(11:I:ffu tao gcim: A. cac electron va de pn)(ClIl. B. de electron va cac IHnn)l). C. cue electron vu de uuclon. D. cue nuclon. 46. Cau nao suu oay dung? A. Ph6ng X:,J. i;) hien tUl.ing m()t hat nhan nr <.1(mg phung ra nhtrng bite X;,L va hien 06i thanh hat nhiln khac. B. Trong hien tmjng phong xa, dinh lu~t phan ra phong X<J, Ol«.1c nghiern (lung. e. Trong hien urong phong X<,I. de dinh lu~t hao toan oi~n tich va bao toan s(1 kh()i <.1t«.1C nghiern oung. D. Cac diu A, B va C (f~u dung. 47. Cdu nao sal! (fay sui? A. Tia p - co thG xuyen qua m(lt tam chi day co centirnet. B. Trong oit;ll tnrong, ria W h, I~ch v~ phia han dimng ella tv oi4¢l1. C. Hat W thuc chill li) hat [1l)zitrtm. I). H ..i.t W mung llit;1l rich am. 48. Goi HI va H(t) 10) (l ph6ng xa han dilu va l~ithoi <.1i~m t, T la chu k] han d rIT. A la hling s() phan ra phong X~. Bitiu thuc tinh d() ph6ng xu la: A. H(I)=~. H" B . H(t)=1 LI lie .. ;./, . N(t) C. 11(1);;;: --. I). H(l) = lI"c ~i_l . A127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 31
  34. 34. WWW.VIETMATHS.COM Su dung dil ki~1l sau: P/iJl)ni 2!~Po fa chat phong x~ a vdi chu ki hun rd fa 13~ ngu». fJ() phong X{l han lulu eua nt) fa J.fJ7./0/l Bq. Cho m( Po) .:::109. 9~2u; NA = fJ,022.! U:C3 /mol. Trd tai Cal cdu hoi 49 va 50. 49. H~ng stl philn fa ph6ng xa cua Po lu: A. A. == O,00502/ngay. B. f" ::: O,00502!giuy. C. A. == O,OOS02! phut. D. f" = 0,0502 ngay. 50. Khtli hrong han duu cua Po lu: A. mo= 1 gam. B. rn., == 1.5 gam. e. mil ::: 0,5 gum. D. mo==4gam. 1. Trong dao d()ng di~u hou, gia t<,)(; ua chfit di~m hien thien doi vdi thoi c gian theo quy IU~l: A. ham s6 rnu. B. ham stl dang sin hoac eosin, C. ham s()h~c nhat. D. ham sO h~c hai. 2. M()t vijt thuc hicn cf()ng thlfi hai dao d(mg co phuong trinh: x, ==A, sin( rot + <P d va x~::: A~sin( rot + (j)2) Bien d<) A eua dao u<)ng tdng hlJP X<lC dinh h<)i c<lng thuc: , A. A = JA~ + A; + 2A,A2 cos(j>, -q>J. B. A::: JA: +A; -2A,A2 CO~(q>1 -q(2) C. A= D. A= 3. Khi duo d(lOg ciia v~t I;) tiit d5n thl:127.0.0.J2 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 1
  35. 35. WWW_VIETMATHS_COM A. bien de) giiim dun theo lhtfi gian. B. chu kl dao d(mg rtll nho. C. C(1 nang kh(mg thay d6i. D. Ii U(l hicn thien theo quy luUt u<,tng sin ho~c eosin then lhtli gian. 4. Mt)t v~t duo d(mg uieu hoa then phtMng trlnh x = 10 sin 61 (cm.s l. K hi v~ t qua vi tri di n h;1ng. V~ll IC)e cua v~t e6 Ut) IOn IJ: A. v = ~6()cm/s. B. V = 6()cm/s. C. V = ~60m/s_ D_ v = 60m/s_ Sit dung dil kien sau: M(JI con /dc Ii) x() wJIIl l~il n~jng ((1 kllt;,- h(~tflg 0,4 kg 1£1 IIU_)I Ie) X() (,(I d(i cling 4()Nlm (Nl /1(Im ngllng. Keo ),(it N;(h kluJi Ij tri cdn heIllg lII(jl doan 12c111 )·(1fhd nhe cho no due) (l(mg. Ikj qua moi rna sut . {rei hli cdc ciiu 5 IU 6. 5. Chon true toa d(l Ox trung vtfi phuong chuyen d(mg eli a LJua n.;ing. GC)C to;,.). , tlil trunueo Vt1i VTCB. chieu Jlftfllg I;) (;hi~lI ken va.l e e)l th(li I" ian 1~1 .. :> Itic buong v4 t. Phuong Irlnh duo d(li1g la: A_ x = 12sin( 10m + ~ ) (ern). B. x = 120sin( lOt + ~) (em). 2 2 C. x = 12sin( lOt + ~ ) (COl). D. x = 12sin( lOt + 7I) (em). 2 6. Khi qua vi tri can h~ng. v~n t()c elm v~lla: A. V = 1,2m/s. B. v = 120m/s. c. v = 12m/s. D. v = 0, 12m/s. 7. Cau pluit hi~u nao sau day dung! A. Chu kl song III thifi gian song truyen dtf(fl quang dU(fng h~ng Ill()t sf{ nguyen I;}n hUlk song. B. D<:li hrong nghich dao cua chu kr goi la tan s{l g()l lua song. C. V(in telc truyen song I::. v~n t6c truyen pha dao d(lJlg_ D. Bien d(l Jan u(mg cuu song luon hien thien thco LJUY IU~1 ham sC) I1lLl theo thlfi gian. It Phuong duo u(mg ella s(mg doc luon: A. nam then pmroug ngung. B. llhm theo phlflfng thdng d((llg.127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 20 DE TRAC NGHtEM T.SINH_ VAT LV _ 3
  36. 36. WWW.VIETMATHS.COM C. trung vdi phirong truyen song. D. vuong goc v(fi phuung truyen s6ng. 9. Trong qua trlnh giao thoa song, Goi iq> la d(> lech pha cua hai song thanh phtin tai M. Vdi n :::: I. 2. 3 ... bien d<}duo d(mg tui M dat eire da i khi ~(j) lhou man: rt A. t«l == (2n + I) 1t . B. i.lf.l :::: (2 n + I) - . 2 C. A(j) :::: 2n n , D. A(p :::: (2 n + 1).2:.. 2 10. Trong thi nghiern giao thou song tren m~t nunc. hai nguon ket hop A. B duo u(mg vtfi t5n sf) f :::: 15Hz. T<J.i uidm M each nguin A, B nhtrng khoang dl ::::19cm. d~ =. 21cm. s6ng e() bien u() eire dai. Giira M va ulfl1ng trung tnrc cua AS khong ell eire dai nao khac. V~n t6c truyen song tren m:)1 lH(OC la: A. v:::: 7.5 cm/s; B. v == 30 crn/s. C. v :::: 00 cm/s. 6 D. 13 cm/s. 11. Cil 1I nao sa 1I dily dung? A. Hi~u di(:n the dao d(lIlg dieu hou c(i j""ng II ::::U11sin(- (IJ t + qi ), B. Trong may phat dien, hieu ui~n the duo dOng uieu boa 1uon co l<1n s{) hhng tan sC;cua khung day khi no quay trong ttr tnrong. C. Hieu tlit;n the duo d(mg dieu hoa la hieu dien the hien thien theo thoi gian theo LJUY Ill;}t ham st; dang sin hoac eosin. D. Cii A. B. C lt0u <lung. 12. Trong doan mach R, L, C mUc nCiitiep. he; sci cong suill phu thU(lC vao: A. gia tri R. L. C va tan S{) cua dung ui~Jl. B. hieu <li~1l the hai duu doan mach. C. euifng <l() hieu dung trong mach. D. cit hieu dic¢n the va dong di~n. St? d~lIlg tiL? k;~;11suu: D(U vilo hai ddu doan mach !:6m (li{n 1Id thudn R mJj liej) vdi tu Jif" Cr) di~n dung C m(ir hiiu Jifn Ihe:wu.v chiPu u = Ursin OJ t. Trd Illi cdc ((Ill ll); J 3 1£1 4.127.4 .0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 10
  37. 37. WWW.VIETMATHS.COM 13. Cl(ong d(l hi~u dung cua dong di~1l qua mach du(.k xac dinh hiii: A. I = _----.==U=(=) == C. I = --==U=I""I = ,/R + (J)C ~ I 14. Kct 11I~n nao sal! day la dung! A. Hieu dit;n the hai d5.u doan mach nhanh phu hon dong dit;ll. B. Hi~LI dj~n the hai dUll tu di~n nhanh pha 11(1n hieu dit;n the hai dau dic. tri~ mtJt goc ~. n . 2 C. Dong llic;n hi~lI dung qua ui~n tr(~ va qua tu dien hiing nhau.~.o D. T{~;ngtr(j ciia doan mach lu: Z = JR;(J)C .uvi:::c Sit d~lI7g cit? ki~~11 .W/(:l-e::( 4~ M ~) c1 h gam dten tro~R , tu diIft1 C ~ 10- = ~ F ., c,uon aay cod (! It! .t s A A AI- O~/Il 11l~IC V(JLLJ:::0:3:3: (£1111 L = _!_ H IIldc n(ti rie/J. J)r;;r Ic/O hai ,Mu doan mach m(jl hi~u di~n the3: n II = 2()() J2 sil1/()Om (V) thi (kmX di~n trong macn la I = J2 A. 11(/ hli ca« ({lulu); 15, 16 Ill 17. 15. Di;n 1r(1 R ell gi::i. tr! 1a: A. 100,2 r- n B. ioon. c. 200fi 0.. D.2000.. 16. Hicu di~n Ih0hi;u dung hai dJu CU(lJl day Iii: A. UI. = 100Ji A. B. I = IOOA. C. I = 200A. D. 1= 200.fi A. 17. Dong di~n trong mach co hi0u thuc Ia: A. j = 2sin( 100m + ~) (A). B. i = 2 .fi sin( lOOnt + ~ ) (A). 4 4 C. i = 2sin( 100m -- ~) (A). D. i ::.J2 sin( 1()Om - ~) (A). 4 4 127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 35
  38. 38. WWW_VIETMATHS_COM18. MN may phat dien xoay chit}u co r(lto quay 600 vong/phiit. Neu may co 4 c<Jp cue thl tan sf; dong dit;n do [H) phut ra la: A_ 40 H/_. B. 600 Hz_ C ISOHz. D.2400Hz.19. M()t bien the dung trong may thu VI) tuyen uic:n Cl) m()t clH)n s~1cap IUle vao rnang dit;n 4XV. cuon thu cap d) 50n vong day lay ra hieu ui(:n the 12V_ SC; vong day cua cufm s(1 cap la: A. 6000 v(mg. B. 125 vong. C :W()O vong. D. 240()() v(mg.20. Trong 111L.teh lI(mg L, C. (Ji~n tich cua tu di~n hien thien theo <-iUY dao lll~t dang sin theo th(jj gian thi nang h.l1ng tile thoi trong cu(m dill hien thicn then th(1i gian then quy IUi}l dang: A_ sin. B. eosin. D. l·osin~.21. Chu kl duo d(mg di~n llf It! do trong mach dao (1(lIlg L, Cia: A. T = . V[c 2n C 8_ T = 2n JLC . C. T = .hLC- 11: D. T= nJZ.22. Trung ngLiyen tac ph.it va thu song ui~n Itt thl: A. Nhit cll angtL:n rna ta e(i th0 chon I~.(_ul(.1e song dn thu. B. l)~ thu stmg Lli~ll tir, can dung m{)t angten. c. Dti phat s(lIlg uit;n tu. phdi mac ph{)i hup mt)t may phiit dao u(mg uifu hou v(1i mot angtcn. D_ C:1 A, I? va C d~LI thing.23. Much duo u(lIlg ella mot may thu thanh gtm tu di~n C va cuon Jay (_() ll) tL.( d m L = 10 -5H_ D0 m ...c.h ··h5:t" UL(l_1c song e6 hLfde song ttf 10m . Jen 100m thi ui~n dung cua tu ui~n phai hien thien trong khoang: A. tu ().2~2mF llen 2,X2mF. B. tl().2~GI-!F uen 2,82f..lF. C. Ilt O.2~2pF lien 2JGpF. D. tu O,282F den 2JQF.24. TWl1g qua trinh tao anh qua gLwng ph&ng thl: A. v~t th~t cho anh th~t. B. vat that cho iinh iio. c. V(lt va iinh luou ngiroc chien. D_ anh e6 the thu 4.lL(jC ["(1net tren man.127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012
  39. 39. WWW.VIETMATHS.COM A. f= R. B. f= 2R. C. f:: ~. D. = R 2 " J2 26. Goi 0 1<)quung l.n .n. F Iu lieu lt6m v~t. F la lieu t1<,-::ll} iinh cihl llH)t thdu kinh pluln kl. E>icu nao sau (By Ja sui. A. V(l.t th~1 cho anh un cung chi~u va luon nh(l hun vUI. B. V 4 t lh~ t cho anh iio cung chieu v~ luon [(~n h ..rn vUt. C. V ~t iio trong doan OF lu(.n elm anh IhG t ding chi0u ~l I(jn hun v~t. D. V~t va iinh c(llh~ c() kich IhL(.k· kh .i.c nhuu. 27. I:)~ I m!)t vi),t phling AB vLl~ng glk v(fi true chinh ella nHyt gL(dng caLi lom c6 tiClI <.:~r 40cl11 thi anh cuu vi).t d) vi tri trung v(1i vi).t. Khoiiug ciich til vi).I dC:n gtr fng 1£1: A. J :::Xlkm, B. d :::-X(km. C. d ::: .;J(Il-IlI. D, d :::-40clll. 2M. M()I th .I.u k lnh hl)i ru l: hie-t SlItlt n ::: 1.5, I icu I:L,( l ::W .eill. t:J hu i m .). I . : [{Ii hun kinh h.1ng nhau. Ban kinh hai m.;it <.:lia thau kinh la: A. R = -4(klll. B, R :: .;J(km. C. R:: -5~m. D, R = Scm. 29. t1()t Ih:ILl kinh pluln kl co lieu l:~( r = -JOcm. I:)~l v~t AR d .:h IhaLl kinh . 601."111 th] vi tri (til) va l1(1 phiing (t,li (k) cuu anh la~ I ) I I A. d = -20c1II: k == " B. d = -20cl1l: k ::;: .., , - J . , I , 1 C.d=20cm;k== -. D. U = -20cl11: k = - -. 3 3 30. Kct lu}1l n~LO sau uay )a sui khi so sunh m:1t va may dnh? A. (;ial 1ll,ll C. vui lr{) gi()ng nlur phim. B, Thuy tinh Ihe ~()vai lrC)giting nhu v~t kinh. C. Con ngl(fi dl vai tfll giClng nhu man chan c(l 16 hlf. D. Anh ihu lILt,fC trcn phim ClIU may anh va tren V()llg mac cua mal c() t inh dl:11 gi()ng n hau. 31. Trcn ~t1h,cuu nU)1 kinh hip ell ghi X25, Ticu elf dIU kinh hip [a: A. f = 25e1l1. B. f = kill. C. r = 2.5cm. D. f= IOem.127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012 :7

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