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 11:

  A body falls freely under gravity (g = 9.8ms^-2) from a height of 40m on to the top of a platform 0.8m above the ground. Its velocity on reaching the platform is

  Options:
  A) 784ms^-1
  B) 80ms^-1
  C) 78.4ms^-1
  D) 39.2ms^-1
  E) 27.7ms^-1
  Show Answer
  The correct answer is E .
• Question 12: A body has masses of 0.013kg and 0.012 kg in oil and water respectively. If the relative density of oil is 0.875 calculate the mass of the body. Options:
  A) 0.02 kg
  B) 0.03kg
  C) 0.04kg
  D) 0.05kg
  E) 0.06kg
  Show Answer
  The correct answer is A .
• Question 13:
  

  A 400 N box is being pushed across a level floor at a constant speed by a force P of 100 N at an angle of 30.0° to the horizontal, as shown in the the diagram below. What is the coefficient of kinetic friction between the box and the floor?

  Options:
  A) 0.19
  B) 0.24
  C) 0.40
  D) 0.22
  Show Answer
  The correct answer is A .
• Question 14: A cone in an unstable equilibrium has its potential energy Options:
  A) decreased
  B) increased
  C) unchanged
  D) oscillating
  Show Answer
  The correct answer is B .
• Question 15:

  Notes of the same frequency sounded on a piano and on a flute may differ inI. pitch

  II. quality

  III. Loudness

  Options:
  A) I only
  B) II only
  C) I and III only
  D) II and III only
  E) I, II and III
  Show Answer
  The correct answer is D .
• Question 16: An alternating current with a frequency of 100HZ has a period of Options:
  A) 0.03sec
  B) 0.01sec
  C) 0.04sec
  D) 0.15sec
  Show Answer
  The correct answer is B .
• Question 17:

  

  The refractive index of the medium M in the diagram above is

  Options:
  A) 1/√3
  B) 2√3
  C) √3
  D) 2/√3
  Show Answer
  The correct answer is C .
• Question 18: Which of the following may be used to explain a mirage? i. layers of air near the road surface have varying refractive indices in hot weather. ii. road surfaces sometimes become good reflectors in hot weathers. iii. light from the sky can be reflected upwards after coming close to the road surface. Options:
  A) ii only
  B) ii and iii only
  C) i and iii only
  D) i, ii, and iii only
  Show Answer
  The correct answer is C .
• Question 19: Electric motor primarily converts Options:
  A) electrical energy into chemical energy
  B) electrical energy into heat energy
  C) kinetic energy into potential energy
  D) electrical energy into mechanical energy
  E) mechanical energy into light energy
  Show Answer
  The correct answer is D .
• Question 20: A real object is placed at a distance ucm in front of a curved mirror of focal length fcm. If the image is upright and magnified, then the mirror is Options:
  A) convex and u =2f
  B) concave and u = 2f
  C) convex and u = f
  D) concave and u = f
  Show Answer
  The correct answer is A .