![Books & Video Lectures for SSC & Railway Exams
www.theorytopractical.com Mobile No. 8003378523, 9588243098
Class Notes by Arun Sir
Useful for
RRB-Loco Pilot, Technician, ASM, JE & SSE
/ofu dh xfr
At 0°C , dry Air = 332m/s
At vaccum = 0 m/s
Speed of sound, given by
V = .....(1)
P = ncko = ?kuRo
V = .....(2)
T = rkieku
fofHkUu dkjdksa dk xfr ij izHkko
dkjd VªsaM
1. inkFkZ (m) Bksl > nzO; > xSl
2. ncko (P) dksbZ izHkko ugha
3. rkieku T T , V
T , V
4. vknzZrk (h) h , V
Important Notes
1. V (Aluminium) = 5000 m/s
V (Water) = 1500 m/s
V (Dray air) = 332 m/s
2. tc] P , Hkh c<+sxkA
V =
dqy izHkko = 0
blfy,] xfr Hkh T;w¡ dh R;w¡ jgsxhA
3. eq. 2 ls V
tc rki c<sxk] V Hkh c<sxhA
T , V & T , V
4. tc vknzZrk c<sxh] ?kVsxhA vknzZrk eryc ok"i
d.k vkSj vki ;g tkurs gS fd ok"i d.k gyds
gksrs gS ¼D;kasfd oks Åij dh vksj mBrs gS½ blfy,
mudk ?kuRo de gksxkA
eq. 1 ls ?kVus ij V c<+ tk,xhA
V ,oa T dk laca/k
1. V
2. At 273K (0°C), v = 332
3. At t°C (t + 273K), V = ?
from, (1), (2) & (3)
V =
=
V 332 + 0.61t ...(4)
(use (1+x)n
= 1 + nx + +......)
eq. 4 dk vfHkizk; gS fd rkieku 1°C c<+us ij] /ofu
dh xfr esa 0.61 dk btkQk gksxkA
/ofu dh xfr fofHkUu bZdkbZ;ksa eas
;wfuV eku uksV
m/s 332
yard/s 363 1Yard= 0.914m
feet/s 1089 if = 0.305 m
rjax ds izdkj
A. xq.k/kfeZrk dh fn'kk ds vk/kkj ij
Transverse
vuqizLFk
Longitudinal
vuq}S/;Z
rjx dh fn'kk ds yacor rjax dh leku fn'kk eas
Eg. Light, Shaking, Rope
& Water Waves
Sound
B. ehfM;e ds vk/kkj ij
esdsfudy ;kaf=d Electromagnetic
ehfM;e dh vko';drk ehfM;e dh t:jr ugha
Eg. Sound Light
vkids fy, vH;kl
1. /ofu dk osx vf/kdre gksxk&
(a) 0°C ij 'kq"d ok;q eas (b) 20°C ij ue ok;q eas
(b) 0°C ij ue ok;q eas (b) 20°C ij 'kq"d ok;q eas
2. 1°C rki dh c<+ksrjh ij /ofu dks osx eas o`f)
gksxh&
(a) 1.0 eh-@ls- (b) 0.01 eh-@ls-
(c) 0.6 eh-@ls- (d) 'kwU;
3. /ofu rjaxs fdl nj ls ;k=k djrh gS&
(a) 1.1 ehy@ls- (b) 550 ;kMZ@ls-
(c) 1100 QwV@ls- (d) 1100 ehy@ls-
Ýh uksV~l o fofM;ksa ysDpj izkIr djus ds fy, gekjh
website - www.theorytopractical.com foftV djsaA](https://image.slidesharecdn.com/soundnotesbyarunsir-180405102155/85/Sound-notesbyarunsir-1-320.jpg)
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- 1. Books & Video Lectures for SSC & Railway Exams www.theorytopractical.com Mobile No. 8003378523, 9588243098 Class Notes by Arun Sir Useful for RRB-Loco Pilot, Technician, ASM, JE & SSE /ofu dh xfr At 0°C , dry Air = 332m/s At vaccum = 0 m/s Speed of sound, given by V = .....(1) P = ncko = ?kuRo V = .....(2) T = rkieku fofHkUu dkjdksa dk xfr ij izHkko dkjd VªsaM 1. inkFkZ (m) Bksl > nzO; > xSl 2. ncko (P) dksbZ izHkko ugha 3. rkieku T T , V T , V 4. vknzZrk (h) h , V Important Notes 1. V (Aluminium) = 5000 m/s V (Water) = 1500 m/s V (Dray air) = 332 m/s 2. tc] P , Hkh c<+sxkA V = dqy izHkko = 0 blfy,] xfr Hkh T;w¡ dh R;w¡ jgsxhA 3. eq. 2 ls V tc rki c<sxk] V Hkh c<sxhA T , V & T , V 4. tc vknzZrk c<sxh] ?kVsxhA vknzZrk eryc ok"i d.k vkSj vki ;g tkurs gS fd ok"i d.k gyds gksrs gS ¼D;kasfd oks Åij dh vksj mBrs gS½ blfy, mudk ?kuRo de gksxkA eq. 1 ls ?kVus ij V c<+ tk,xhA V ,oa T dk laca/k 1. V 2. At 273K (0°C), v = 332 3. At t°C (t + 273K), V = ? from, (1), (2) & (3) V = = V 332 + 0.61t ...(4) (use (1+x)n = 1 + nx + +......) eq. 4 dk vfHkizk; gS fd rkieku 1°C c<+us ij] /ofu dh xfr esa 0.61 dk btkQk gksxkA /ofu dh xfr fofHkUu bZdkbZ;ksa eas ;wfuV eku uksV m/s 332 yard/s 363 1Yard= 0.914m feet/s 1089 if = 0.305 m rjax ds izdkj A. xq.k/kfeZrk dh fn'kk ds vk/kkj ij Transverse vuqizLFk Longitudinal vuq}S/;Z rjx dh fn'kk ds yacor rjax dh leku fn'kk eas Eg. Light, Shaking, Rope & Water Waves Sound B. ehfM;e ds vk/kkj ij esdsfudy ;kaf=d Electromagnetic ehfM;e dh vko';drk ehfM;e dh t:jr ugha Eg. Sound Light vkids fy, vH;kl 1. /ofu dk osx vf/kdre gksxk& (a) 0°C ij 'kq"d ok;q eas (b) 20°C ij ue ok;q eas (b) 0°C ij ue ok;q eas (b) 20°C ij 'kq"d ok;q eas 2. 1°C rki dh c<+ksrjh ij /ofu dks osx eas o`f) gksxh& (a) 1.0 eh-@ls- (b) 0.01 eh-@ls- (c) 0.6 eh-@ls- (d) 'kwU; 3. /ofu rjaxs fdl nj ls ;k=k djrh gS& (a) 1.1 ehy@ls- (b) 550 ;kMZ@ls- (c) 1100 QwV@ls- (d) 1100 ehy@ls- Ýh uksV~l o fofM;ksa ysDpj izkIr djus ds fy, gekjh website - www.theorytopractical.com foftV djsaA