Physics Quiz - Competitive Exams NEET

Free practice quiz: Physics (Competitive Exams NEET). 72 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This Competitive Exams NEET practice quiz has 72 multiple-choice questions on Physics. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. The dimensional formula for the coefficient of viscosity is:

   1. ML²T⁻¹
   2. ML⁻¹T⁻²
   3. MLT⁻¹
   4. ML⁻¹T⁻¹
   Show answer

   Answer: D. ML⁻¹T⁻¹

2. A charge q moves with velocity v parallel to a uniform magnetic field B. The magnetic force on the charge is:

   1. Zero
   2. qv/B
   3. qvB sin 90°
   4. qvB
   Show answer

   Answer: A. Zero

3. A charged particle enters a uniform magnetic field perpendicular to it. The path followed by the particle is:

   1. Helical
   2. Circular
   3. Parabolic
   4. Straight line
   Show answer

   Answer: B. Circular

4. The restoring force in simple harmonic motion is directly proportional to:

   1. Acceleration
   2. Time period
   3. Velocity
   4. Displacement from mean position
   Show answer

   Answer: D. Displacement from mean position

5. The mean free path of gas molecules is inversely proportional to:

   1. Absolute temperature squared
   2. Pressure
   3. Volume
   4. Temperature
   Show answer

   Answer: B. Pressure

More questions in this quiz

Answers and explanations are in the full quiz.

1. A body is projected vertically upward with a velocity of 20 m/s. What is the maximum height reached? (g = 10 m/s²)
2. Which of the following is a vector quantity?
3. For a projectile launched at an angle θ to the horizontal, the horizontal range is maximum when θ is:
4. Newton's first law of motion defines:
5. The work done by a force is zero when the angle between force and displacement is:
6. A particle moves in a circle of radius r with constant speed v. Its centripetal acceleration is:
7. The SI unit of gravitational constant G is:
8. The escape velocity from the Earth's surface is approximately:
9. Two bodies of masses m and 2m are moving with equal kinetic energies. The ratio of their linear momenta is:
10. A solid sphere and a hollow sphere of same mass and radius roll down an inclined plane. Which reaches the bottom first?
11. The time period of a simple pendulum is T. If its length is increased by 2%, the percentage change in time period is approximately:
12. A wire of resistance R is stretched uniformly to double its length. Its new resistance is:
13. The equivalent resistance of two resistors of 6 Ω and 3 Ω connected in parallel is:
14. The refractive index of a medium is 1.5. The speed of light in that medium is approximately:
15. In Young's double-slit experiment, if the distance between the slits is halved, the fringe width:
16. A radioactive element has a half-life of 10 days. The fraction of the original quantity remaining after 30 days is:
17. The de Broglie wavelength of a particle is inversely proportional to its:
18. In an adiabatic process, which of the following remains constant?
19. The temperature at which the root-mean-square speed of a gas molecule becomes zero is:
20. Two charged spheres of radii r and 2r carry equal charges. The ratio of their surface charge densities is:
21. A capacitor C is charged to a potential V and then connected to another uncharged capacitor of capacitance 3C. The final potential across the combination is:
22. The wavelength of the first line of the Balmer series of hydrogen is 656 nm. The wavelength of the first line of the Lyman series is approximately:
23. Which of the following is the SI unit of electric flux?
24. The capacitance of a parallel plate capacitor is C. If the distance between the plates is doubled and the area is halved, the new capacitance is:
25. A wire of resistivity ρ is stretched to three times its original length without changing its volume. Its new resistivity is:
26. Kirchhoff's junction rule is based on the conservation of:
27. The magnetic susceptibility of a diamagnetic material is:
28. The energy stored in a capacitor of capacitance C charged to potential V is:
29. In an electromagnetic wave, the electric field E and magnetic field B are:
30. The phenomenon of photon emission stimulated by an incident photon of the same energy is called:
31. The mass defect in a nucleus is converted into:
32. Which of the following is NOT a fundamental force in nature?
33. The moment of inertia of a solid cylinder of mass M and radius R about its central axis is:
34. A satellite orbits Earth at a height equal to the radius of Earth (R). Its orbital speed is:
35. In a perfectly inelastic collision, which quantity is conserved?
36. The terminal velocity of a spherical body falling through a viscous fluid is directly proportional to:
37. Bernoulli's principle is a consequence of the conservation of:
38. The ratio of specific heats γ = Cₚ/Cᵥ for a monatomic ideal gas is:
39. The coefficient of linear expansion of a material is α. Its coefficient of volumetric expansion is:
40. In a Carnot engine operating between temperatures T₁ and T₂ (T₁ > T₂), the efficiency is:
41. Two waves of equal amplitude and slightly different frequencies superpose. The phenomenon observed is:
42. The electric potential at a distance r from a point charge Q is proportional to:
43. The photoelectric effect establishes the:
44. The nuclear force between two nucleons is:
45. The SI unit of the coefficient of thermal conductivity is:
46. The dimensions of Planck's constant are the same as those of:
47. A body executes simple harmonic motion with amplitude A. At what displacement from the mean position is its kinetic energy equal to its potential energy?
48. The time period of a satellite revolving very close to the Earth's surface depends on:
49. A liquid wets a solid surface when the angle of contact is:
50. The work done in stretching a wire within its elastic limit is stored as:
51. For a body to be in stable equilibrium, its centre of gravity should be:
52. A black body at temperature T radiates energy proportional to:
53. In a cyclic process, the change in internal energy of the system is:
54. A particle of mass m and charge q is accelerated through a potential difference V. Its de Broglie wavelength is proportional to:
55. In a semiconductor, the forbidden energy gap between the valence band and conduction band is of the order of:
56. The output of a NAND gate is 0 only when:
57. The energy of an electron in the nth orbit of a hydrogen atom is proportional to:
58. The resolving power of a telescope is increased by:
59. The phenomenon responsible for the blue colour of the sky is:
60. The power of a lens is measured in dioptres. One dioptre is equal to:

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