This document contains a 50 question physics exam with multiple choice answers. The questions cover topics in physics including X-rays, electron motion in electric and magnetic fields, wavelength of electrons, projectile motion, optics, atomic structure, electricity, magnetism, and more. For each question there are typically 4 possible answers labeled a, b, c, or d.

1. aipmt–Past papersPHYSICS- UNSOLVED PAPER - 1996

2. SECTION – I (Total Marks : 50)Single Correct Answer TypeThere are five parts in this question. Four choices are given for each part and one of them is correct. Indicate you choice of the correct answer for each part in your answer-book by writing the letter (a), (b), (c) or (d) whichever is appropriate

3. 01ProblemThe minimum wavelength of the X-rays produced by electrons accelerated through a potential difference of V volts is directly proportion toa.1/vb. √vc. V2d.1/√v

4. Problem02A beam of electrons is moving with constant velocity in a region having electric and magnetic fields of strength 20 Vm-1 and 0.5 T at right angles to the direction of motion of the electrons. What is the velocity of the electrons?8 ms-15.5 ms-120 ms-140 ms-1

5. Problem03An electron beam has a kinetic energy equal to 100 eV. Find its wavelength associated with a beam, if mass of electron = 9.1 x 10-31 kg and 1 eV = 1.6 x 10-19 J/eV. (Planck’s constant = 6.6 x 10-34 J-s)24. 6 Å0.12 Å1.2 Å6.3 Å.

6. Problem04A man fires a bullet of mass 200 gm at speed of 5 m/s. the gun is of one kg mass. By what velocity the gun rebounds backward?1 m/s0.01m/s0.1m/s10 m/s.

7. Problem05In a Fresnel baptism experiment, the two positions of lens give separation between the slits as 16 cm and 9 cm respectively. What is the actual distance of separation?13 cm14 cm12.5 cm12 cm.

8. Problem06A 10 eV electron is circulating in a plane at right angles to a uniform field at magnetic induction 10-4Wb/m2 (= 1.0 gauss), the orbital radius of electron is 11 cm18 cm12 cm16 cm.

9. Problem07A linear harmonic oscillator of force constant 2 x 106 N/m and amplitude 0.01 m has a total mechanical energy of 160 J. Its P.E. is 160 JP.E. is zero P.E. is 100 JP.E. is 120 J

10. Problem08When NPN transistor is used as an amplifier, thenElectrons move from collector to baseHoles move from base to emitter Electrons move from base to collector Electrons move from emitter to base.

11. Problem09When arsenic is added as an impurity to silicon, the resulting material isn-type conductor n-type semiconductor p-type semiconductor none of these.

12. Problem10When using a triode, as an amplifier, the electrons are emitted byGrid and collected by cathode only Cathode and collected by the anode only Anode and collected by cathode only Anode and collected by the gird and by cathode.

13. Problem11The energy of a hydrogen atom in its ground state is-13.6 eV. The energy of the level corresponding to the quantum number n = 2 in the hydrogen atom is-0.54 eV-3.4 eV-2.72 eV-0.85 eV.

14. Problem12According to Bohr’s principle, the relation between principal quantum number (n) and radius of orbit isa. b.c.d.

15. Problem13In a discharge tube at 0.02 mm, there is formation ofCrooke’s dark spaceFaraday’s dark spaceBoth space partly None of these

16. Problem14A metal ring is held horizontally and bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet isMore than gEqual to gLess than gEither ‘a’ or ‘c’.

17. Problem15The magnetic field dB due to a small current element dl at a distance and element carrying current I isa.b.c.d.

18. Problem16The energy stored in a capacitor of capacity C and potential V is given by a.CV/2b. C2V2/2c. CV2/2d. C2V/2

19. Problem17A point charge + q is placed at the mid-point of cube of side l. The electric flux emerging from the cube is a.b.c. zerod.

20. Problem18An electron of mass m and charge e is accelerated from rest through a potential difference V in vacuum. Its final velocity will bea. √2eV/mb. √eV/mc. 2V/2md. eV/m

21. Problem19Light travels through a glass plate of thickness t and having a refractive index . If c is the velocity of light in vacuum, the time taken by light to travel this thickness of glass is a. t/μcb. μt/cc. Tμcd. tc/μ

22. Problem20The work done in turning a magnet of magnetic moment M by an angle of 900 from the meridian, is n times the corresponding work done to turn it through an angle of 600. The value of n is given by1/21/421.

23. Problem21A ray of light from a denser medium strikes a rare medium as shown in figure. The reflected and refracted rays makes an angle of 900 with each other. The angles of refection and refraction are r and r’. The critical angle would besin-1 (tan r)tan-1 (sin r)sin-1 (tan r)tan-1 (sin r)

24. Problem22At 0 K which of the following properties of a gas will be zero ?Vibration energy Density Kinetic energy Potential energy.

25. Problem23The refractive index of water is 1.33. What will be the speed of light in water ?4 x 108 m/s1.33 x 108 m/s3 x 108 m/s2.25 x 108 m/s

26. Problem24Two sound waves having a phase difference of 600 have path difference of a.λ/6b. λ/3c. 21d. λ/2

27. Problem25A diatomic gas initially at 180C is compressed adiabatically to one eighth of its original volume. The temperature after compression will be395.40C1440C180C887.40C

28. Problem26An ideal gas, undergoing adiabatic change, has which of the following pressure temperature relationship? = constant = constant = constant = constant

29. Problem27A truth table is give. Which of the following has this type of truth table?AND gateOR gateXOR gateNOR gate

30. Problem28This symbol representsAND gateNOR gateNAND gateOR gate.

31. Problem29The value of critical temperature in terms of Van der Waals’ constant a and b is given by a.b.c.d.

32. Problem30Two vectors are such that . The angle between the two vectors will be180000600900

33. Problem31A nucleus ruptures into two nuclear parts, which have their velocity ratio equal to 2 : 1. What will be the ratio of their nuclear size (nuclear radius)?31/2 : 11 : 31/221/3 : 11 : 21/3

34. Problem32A moving body of mass m and velocity 3 km/hour collides with a rest body of mass 2m and sticks to it. Now the combined mass starts to move. What will be the combined velocity ?3km/hour4km/hour1 km/hour2 km/hour

35. Problem33The kinetic energy (Ek) of a photoelectron varies with the frequency (v) of the incident radiation as which of the following graph?a.b.c.d.

36. Problem34A ball is dropped from a spacecraft revolving around the earth at a height of 120 km. What will happen to the ball?It will fall down to the earth gradually It will go very far in the space It will continue to move with the same speed along the original orbit of spacecraft It will move with the same speed, tangentially to the spacecraft.

37. Problem35If a photon has velocity c and frequency v, then which of the following represents its wavelength?a. Hv/c2b. hvc. hc/Ed. hv/c

38. Problem36The dimensions of impulse are equal to that ofPressure Linear momentumForceAngular momentum.

39. Problem37The equation of a sound wave is y =0.0015 sin (62.4x + 316t). Find the wavelength of this wave 0.3 unit0.2 unit0.1unitcannot be calculated.

40. Problem38A force vector applied on a mass is represented as and accelerates with 1 m/s2. What will be the mass of the body?a.10 kgb.20 kgc.10√2kgd. 2√10kg

41. Problem39A body dropped from a height h with initial velocity zero, strikes the ground with a velocity 3 m/s. Another body of same mass dropped from the same height h with an initial velocity of 4 m/s. Find the final velocity of second mass, with which it strikes the ground5m/s12 m/s3 m/s4 m/s.

42. Problem40A particle starts with S.H.M. from the mean position as shown in the fig. Below. Its amplitude is A and its time period is T. At one time, its speed is half that of the maximum speed. What is this displacement?a.2A/√3b. 3A/√2c.√2A/3d.√3A/2

43. Problem41What will be the formulae of mass of the earth in terms of g, R and G?a.b.c.d.

44. Problem42The velocity of photons is proportional to (where v = frequency)a.1/√vb. V2c. vd. √v

45. Problem43If a convex lens of focal length 80 cm and a concave lens of focal length 50 cm are combined together, what will be their resulting power ?+ 7.5 D-0.75 D+ 6. 5 D-6.5 D.

46. Problem44The density of a cube is measured by meausuring its mass and length of its sides. If the maximum error in the measurement of mass and lengths are 3% and 2% respectively, the maximum error in the measurement of density would be12%14 %7%9 %.

47. Problem45An equation is given here where P = Pressure, V = Volume and = Absolute temperature. If a and b are constants, the dimensions of ‘a’ will beML-5T-1ML5T1ML5T2M-1L5T2.

48. Problem46Which of the following dimensions will be the same as that of time ?a. L/Rb. C/Lc.LCd. R/L

49. Problem47Two equal electric currents are flowing perpendicular to each other shown in the figure. AB and CD are perpendicular to each other and symmetrically placed with respect to the currents. Where do we expect the resultant magnetic field to be zero?On CDOn ABOn both OD and BOOn both AB and CD.

50. Problem48A body is whirled in a horizontal circle of radius 20 cm. It has an angular velocity of 10 rad/s. What is its linear velocity at any point on circular path ?20 m/s√2 m/s10 m/s2 m/s.

51. Problem49A 10 N force is applied on a body produce in it an acceleration of 1 m/s2. The mass of the body is 15 kg20 kg10 kg5 kg.

52. Problem50What will be the equivalent resistance between the two points A and D?30Ω40 Ω10 Ω10 Ω

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