Physics Exam Past Questions and Answers | JAMB, WAEC and NECO

Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.

• Question 181: How far from a hill should a boy stand to hear the echo of his clap 1 .6s later? [Speed of sound in air is 340ms^-1] Options:
  A) 186m
  B) 272m
  C) 544m
  D) 1088m
  E) 2000m
  Show Answer
  The correct answer is B .
• Question 182: Boyle’s law may be Witten as Options:
  A) P1V1= P2V2
  B) V1 = V2 ÷ T1T2
  C) P1T1 = P2T2
  D) P1V1 ÷ T1 = P1V1 ÷ T2
  Show Answer
  The correct answer is A .
• Question 183:

  The pitch of a screw jack is 0.45cm and the arm is 60cm long. If the efficiency of the Jack is 75/π %, calculate the mechanical advantage.

  Options:
  A) 400
  B) 300
  C) 200
  D) 150
  Show Answer
  The correct answer is C .
• Question 184:

  A car of mass 800kg attains a speed of 25m/s in 20secs. The power developed in the engine is?

  Options:
  A) 1.25 x 10${}^4$W
  B) 2.50x 10${}^4$W
  C) 1.25 x 10${}^6$W
  D) 2.50 x 10${}^6$W
  Show Answer
  The correct answer is A .
• Question 185: The bulb of a motorcycle head-lamp is marked 40W, 6V. The resistance of the filament when it is switched on is Options:
  A) $\frac{6^2}{{40}^2}$ohms
  B) $\frac{40}{6^2}$ohms
  C) $\frac{40}{6}$ohms
  D) 6 x 40 ohms
  E) $\frac{6^2}{40}$ohms
  Show Answer
  The correct answer is E .
• Question 186: An object moves with uniform speed round a circle. Its acceleration has Options:
  A) constant magnitude and constant direction
  B) constant magnitude and varying direction
  C) varying magnitude but constant direction
  D) varying magnitude and varying direction
  Show Answer
  The correct answer is B .
• Question 187: Young’s modulus of elasticity is the ratio of stress to strain, provided the load does not exceed the Options:
  A) breaking point
  B) elastic limit
  C) plastic limit
  D) stress limit
  E) yield point
  Show Answer
  The correct answer is B .
• Question 188: Which of the following is stored by a dry Leclanche cell? Options:
  A) Electrical power
  B) Kinetic energy
  C) Electric current
  D) Chemical energy
  Show Answer
  The correct answer is D .
• Question 189:

  What force has to be exerted on a mass 60kg to give it an acceleration of 10ms^-2 vertically upwards?

  [g = 10ms^-2

  Options:
  A) 300N
  B) 600N
  C) 1200N
  D) 400N
  Show Answer
  The correct answer is C .
• Question 190: A bullet fired vertically from upward from a gun held 2.0 m above the ground reaches its maximum height in 4.0s. calculate its initial velocity.
  [g = 10ms^-2] Options:
  A) 10 ms^-1
  B) 8 ms^-1
  C) 40 ms^-1
  D) 20 ms^-1
  Show Answer
  The correct answer is C .