Physics Jamb Past Questions and Answers for science students preparing for jamb.
Physics in JAMB tests your understanding of concepts like motion, energy, waves, and electricity. To perform well, you need more than theory—you need to know how questions are set and how to apply formulas correctly.
JAMB Physics past questions and answers give you real exam experience, helping you recognize patterns, avoid common mistakes, and sharpen your problem-solving skills before the actual test.
Physics Jamb Past Questions and Answers
1. The unit of capacitance is
A. Farad
B. Henry
C. Ohm
D. Volt
Answer: A
2. The time taken to complete one oscillation is called
A. Frequency
B. Period
C. Amplitude
D. Phase
Answer: B
3. Which of the following is used to measure atmospheric pressure?
A. Ammeter
B. Barometer
C. Voltmeter
D. Thermometer
Answer: B
4. A transformer works on the principle of
A. Electromagnetic induction
B. Electrostatics
C. Magnetic force
D. Resistance
Answer: A
5. The escape velocity of a body depends on
A. Mass only
B. Radius only
C. Both mass and radius
D. Temperature
Answer: C
6. The SI unit of inductance is
A. Tesla
B. Henry
C. Weber
D. Coulomb
Answer: B
7. The path followed by a projectile is called
A. Orbit
B. Pathway
C. Trajectory
D. Curve
Answer: C
8. The force that keeps planets in orbit is
A. Magnetic force
B. Electrostatic force
C. Gravitational force
D. Frictional force
Answer: C
9. Which of the following is a semiconductor?
A. Copper
B. Silicon
C. Iron
D. Aluminium
Answer: B
10. The unit of magnetic flux is
A. Tesla
B. Weber
C. Henry
D. Volt
Answer: B
11. The pitch of a sound depends on its
A. Amplitude
B. Frequency
C. Velocity
D. Energy
Answer: B
12. The energy in a capacitor is stored in the form of
A. Magnetic field
B. Electric field
C. Mechanical energy
D. Heat energy
Answer: B
13. A convex mirror always forms
A. Real image
B. Inverted image
C. Virtual image
D. Enlarged image
Answer: C
14. The slope of a velocity-time graph represents
A. Speed
B. Distance
C. Acceleration
D. Displacement
Answer: C
15. The unit of electric field strength is
A. N/C
B. J/C
C. C/N
D. V/A
Answer: A
16. A wave with higher amplitude has
A. Lower energy
B. Higher energy
C. Same energy
D. No energy
Answer: B
17. The Doppler effect is related to change in
A. Speed
B. Frequency
C. Energy
D. Direction
Answer: B
18. The device used to store electric charge is
A. Resistor
B. Capacitor
C. Inductor
D. Transformer
Answer: B
19. The motion of electrons in a conductor produces
A. Heat only
B. Light only
C. Electric current
D. Magnetic field only
Answer: C
20. The SI unit of gravitational constant is
A. N/m²
B. Nm²/kg²
C. kg/m³
D. m/s²
Answer: B
21. The center of gravity of a uniform body is at its
A. Edge
B. Surface
C. Middle
D. Bottom
Answer: C
22. The image formed in a pinhole camera is
A. Virtual
B. Upright
C. Real and inverted
D. Enlarged
Answer: C
23. The refractive index increases when light moves to a
A. Less dense medium
B. Denser medium
C. Vacuum
D. Same medium
Answer: B
24. Which quantity is conserved in elastic collision?
A. Velocity
B. Momentum
C. Force
D. Distance
Answer: B
25. The work done in lifting a body is stored as
A. Kinetic energy
B. Potential energy
C. Heat energy
D. Chemical energy
Answer: B
26. The unit of angular velocity is
A. rad/s
B. m/s
C. s/rad
D. m/s²
Answer: A
27. A fuse wire melts due to
A. High voltage
B. Low current
C. Heating effect of current
D. Magnetic effect
Answer: C
28. The time rate of change of momentum is
A. Work
B. Force
C. Power
D. Energy
Answer: B
29. The phenomenon of splitting white light is
A. Diffraction
B. Reflection
C. Dispersion
D. Refraction
Answer: C
30. The SI unit of specific heat capacity is
A. J/kgK
B. N/m
C. W/m²
D. kg/m³
Answer: A
31. Which law explains floating of bodies?
A. Boyle’s law
B. Archimedes’ principle
C. Ohm’s law
D. Newton’s law
Answer: B
32. The region around a magnet where force is felt is
A. Magnetic area
B. Magnetic field
C. Magnetic space
D. Magnetic zone
Answer: B
33. The SI unit of wave speed is
A. m/s
B. m²/s
C. s/m
D. Hz
Answer: A
34. Which of the following increases resistance?
A. Increase in area
B. Decrease in length
C. Increase in length
D. Increase in temperature always
Answer: C
35. The power factor is defined as
A. V/I
B. cosθ
C. sinθ
D. tanθ
Answer: B
36. A body in uniform circular motion has
A. Constant velocity
B. Zero acceleration
C. Centripetal acceleration
D. No force
Answer: C
37. The SI unit of luminous intensity is
A. Candela
B. Lumen
C. Lux
D. Watt
Answer: A
38. The efficiency of a machine is always
A. Greater than 100%
B. Equal to 100%
C. Less than 100%
D. Zero
Answer: C
39. The voltage in Nigeria mains supply is about
A. 110 V
B. 220 V
C. 330 V
D. 440 V
Answer: B
40. Which device converts AC to DC?
A. Transformer
B. Rectifier
C. Capacitor
D. Resistor
Answer: B
41. The slope of a displacement-time graph gives
A. Speed
B. Velocity
C. Acceleration
D. Distance
Answer: B
42. The unit of impulse is
A. Ns
B. N/m
C. J/s
D. kg/m
Answer: A
43. The SI unit of electric potential is
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: A
44. The energy transformation in a generator is
A. Electrical to mechanical
B. Mechanical to electrical
C. Chemical to electrical
D. Heat to mechanical
Answer: B
45. The amplitude of a wave affects its
A. Speed
B. Frequency
C. Energy
D. Wavelength
Answer: C
46. The SI unit of heat capacity is
A. J/K
B. J/kg
C. N/K
D. W/K
Answer: A
47. Which force acts between charged particles?
A. Gravitational
B. Magnetic
C. Electrostatic
D. Frictional
Answer: C
48. A convex lens is also called
A. Diverging lens
B. Converging lens
C. Plane lens
D. Concave lens
Answer: B
49. The resistance of a wire is directly proportional to
A. Area
B. Length
C. Temperature only
D. Density
Answer: B
50. The SI unit of electric power is
A. Joule
B. Watt
C. Volt
D. Ampere
Answer: B
Physics Jamb Past Questions and Answers
51. The motion of a pendulum is
A. Linear
B. Circular
C. Oscillatory
D. Random
Answer: C
52. The process of heat transfer in solids is mainly
A. Convection
B. Radiation
C. Conduction
D. Reflection
Answer: C
53. The SI unit of angular acceleration is
A. rad/s²
B. m/s²
C. rad/m
D. s/rad
Answer: A
54. The force between two currents is
A. Electrostatic
B. Magnetic
C. Gravitational
D. Nuclear
Answer: B
55. The unit of magnetic field strength is
A. Tesla
B. Weber
C. Henry
D. Volt
Answer: A
56. A body gains heat when temperature
A. Decreases
B. Increases
C. Remains constant
D. Becomes zero
Answer: B
57. The SI unit of charge per unit time is
A. Volt
B. Ampere
C. Coulomb
D. Ohm
Answer: B
58. Which device increases voltage?
A. Rectifier
B. Transformer
C. Motor
D. Generator
Answer: B
59. The speed of sound depends on
A. Density of medium
B. Temperature
C. Nature of medium
D. All of the above
Answer: D
60. The turning effect of a couple is called
A. Work
B. Torque
C. Force
D. Energy
Answer: B
Physics Jamb Past Questions and Answers
61. The SI unit of displacement is
A. Meter
B. Second
C. Kilogram
D. Newton
Answer: A
62. The current in a series circuit is
A. Different everywhere
B. Same everywhere
C. Zero
D. Infinite
Answer: B
63. The image in a convex mirror is always
A. Real
B. Enlarged
C. Virtual and diminished
D. Inverted
Answer: C
64. The SI unit of electric flux is
A. Nm²/C
B. N/C
C. J/C
D. V/m
Answer: A
65. The resistance of a conductor depends on temperature because
A. Length changes
B. Area changes
C. Molecular motion changes
D. Voltage changes
Answer: C
66. The SI unit of wavelength is
A. Meter
B. Second
C. Hertz
D. Joule
Answer: A
67. The potential difference across a conductor is measured in
A. Ampere
B. Volt
C. Ohm
D. Watt
Answer: B
68. Which instrument measures electric charge?
A. Ammeter
B. Voltmeter
C. Electrometer
D. Galvanometer
Answer: C
69. The direction of induced current is given by
A. Ohm’s law
B. Lenz’s law
C. Boyle’s law
D. Newton’s law
Answer: B
70. The total resistance in parallel connection is
A. Sum of resistances
B. Greater than largest resistor
C. Less than smallest resistor
D. Equal to one resistor
Answer: C