Physics 2018 Past Questions | JAMB

Study the following Physics past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

41. The inner diameter of a small test tube can be measured accurately using a

  • A. Micrometres screw gauge
  • B. Pair of dividers
  • C. Metre rule
  • D. Pair of vernier calliper

42. A pulley system has three pulleys in the fixed block and two in the movable block and if the pulley has an efficiency of 72%, the mechanical advantage of the system is?

  • A. 36.0
  • B. 7.2
  • C. 5.0
  • D. 3.6

43. When an atom loses or gain a charge it becomes

  • A. An electron
  • B. An ion
  • C. A neutron
  • D. A proton

44. A ball of mass 800g moving horizontally with a speed of 5m/s hits a vertical wall and rebounds with the same speed. The impulse experienced by the ball is?

  • A. 0kgm
  • B. 2kgm/s
  • C. 4kgm/s
  • D. 8kgm/s

45.  The force between the molecules of a liquid in contact with that of a solid is?

  • A. Adhesive
  • B. Cohesive
  • C. Magnetic
  • D. Repulsive

46. A body of mass 100g moving with a velocity if 10ms-1 collides with a wall. If after collision it moves with a velocity of 2.0ms−1 in the opposite direction, calculate the change in momentum.

  • A. 0.8Ns
  • B. 1.2Ns
  • C. 12.0Ns
  • D. 80.0Ns

47. A 20kg mass is to be pulled up a slope inclined at 30° to the horizontal. If efficiency of the plane is 75%. The force required to pull the load up the plane is J [g=10ms2]

  • A. 87N
  • B. 73.5N
  • C. 133.3N
  • D. 533.2N

48. The tendency of a body to remain at rest when a force is applied to it is called.

  • A. Impulse
  • B. Momentum
  • C. Inertia
  • D. Friction

49. An object is placed 20cm from a concave mirror of focal length 10cm. The linear magnification of the image produced is?

  • A. 0
  • B.  1/2
  • C. 1
  • D. 2

50. The energy needed to move a unit positive charge around a complete electric circuit is called the

  • A. electromotive force
  • B. electric potential difference
  • C. electric energy
  • D. kinetic energy
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