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 151: Which of the following is NOT a force? Options:
  A) Friction
  B) Tension
  C) Upthrust
  D) Weight
  E) Impulse
  Show Answer
  The correct answer is E .
• Question 152: The coefficient of static friction between a 40kg crate and concrete surface is 0.25. Find the magnitude of the minimum force needed to keep the crate stationary on the concrete base inclined at 45^o to the horizontal. [G = 10ms^-1] Options:
  A) 400N
  B) 300N
  C) 283N
  D) 212N
  Show Answer
  The correct answer is D .
• Question 153: Which of the following waves can propagate through a vacuum? Options:
  A) High velocity sound waves
  B) Ultrasonic waves
  C) Acoustic waves
  D) Infra-red waves
  Show Answer
  The correct answer is D .
• Question 154: Which of the following statements about evaporation and boiling is FALSE? Options:
  A) Evaporation may take place at any temperature.
  B) In evaporation, vapour escapes only from the surface of a liquid
  C) The temperature remains constant as long as the liquid is boiling
  D) The temperature at which boiling takes place can be altered by changing the external pressure
  E) The rate of evaporation does not depend on temperature.
  Show Answer
  The correct answer is E .
• Question 155: From the kinetic theory of gases, temperature is a Options:
  A) form of energy and is proportional to the total kinetic energy of the molecules
  B) form of energy and is proportional to the average kinetic energy of the molecules
  C) physical property and is proportional to the total kinetic energy of the molecules
  D) physical property and is proportional to the average kinetic energy of the molecules
  Show Answer
  The correct answer is D .
• Question 156:

  If the frequency of an emitted x-ray is 1.6 x 10¹⁶Hz, the accelerating potential is?

  [e = 1.6 x 10^-19C, h = 6.63 x 10^-34Js]

  Options:
  A) 6630.0V
  B) 663.0V
  C) 66.3V
  D) 6.6V
  Show Answer
  The correct answer is C .
• Question 157: Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is Options:
  A) conical
  B) cubical
  C) cylindrical
  D) parabolic
  E) spherical
  Show Answer
  The correct answer is C .
• Question 158: The temperature at which the water vapour present in the air is just enough to saturate the air is the _______ point. Options:
  A) boiling
  B) critical
  C) dew
  D) ice
  E) steam
  Show Answer
  The correct answer is C .
• Question 159: 10⁶J of heat is required to boil off completely 2kg of a certain liquid. Neglecting heat lost to the surroundings, the latent heat of vaporization of the liquid is Options:
  A) 2.0 x 10⁶J kg^-1
  B) 5.0 x 10⁶J kg^-1
  C) 2.0 x 10⁵J kg^-1
  D) 5.0 x 10⁵J kg^-1
  Show Answer
  The correct answer is D .
• Question 160: The helium isotope ${}_2^{3}He$ Options:
  A) has three pro tons and two neutrons
  B) has two protons and one neutron
  C) has two protons and three neutrons
  D) has one proton and two neutrons
  E) cannot exist because it has the same mass number as tritium
  Show Answer
  The correct answer is E .