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 1001: If the partial pressure of water vapour at 27°C is 18 mm Hg and the saturated vapour pressure of the atmosphere at the same temperature is 24 mm Hg, the relative humidity at this temperature is? Options:
  A) 25%
  B) 33%
  C) 75%
  D) 82%
  Show Answer
  The correct answer is C .
• Question 1002:

  

  The diagram above show the positions of a cone. The position which can be described as neutral equilibrium is represented as

  Options:
  A) Z only
  B) X only
  C) Y and Z
  D) Y and X
  Show Answer
  The correct answer is A .
• Question 1003:

  When two objects A and B are supplied with the same quantity of heat, the temperature change in A is obtained to be twice that of B. The mass of P is half that of Q. The ratio of the specific heat capacity of A to B is

  Options:
  A) 1 : 4
  B) 4 : 1
  C) 1 : 1
  D) 2 : 1
  Show Answer
  The correct answer is C .
• Question 1004: A machine has an efficiency of 80%. If the machine is required to overcome a load of 60N with a force of 40N, calculate its velocity ratio. Options:
  A) 0.53
  B) 0.83
  C) 1.20
  D) 1.50
  E) 1.88
  Show Answer
  The correct answer is E .
• Question 1005: Which of the following statements is correct about light and sound waves? Both Options:
  A) are longitudinal waves
  B) are transverse waves
  C) have the same velocity in air
  D) need a medium for propagation
  E) transmit energy
  Show Answer
  The correct answer is E .
• Question 1006: The factional force between two bodies Options:
  A) exists only when there is relative motion or tendency for motion
  B) acts so as to oppose the motion
  C) depends on the normal reaction between the two surfaces
  D) is relatively independent of the area in contact
  E) has all of these characteristics
  Show Answer
  The correct answer is E .
• Question 1007:

  A device that converts sound energy into electrical energy is

  Options:
  A) the horn of a motor car
  B) an A.C. generator
  C) a microphone
  D) the telephone
  E) radio waves
  Show Answer
  The correct answer is C .
• Question 1008:

  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 1009: To protect a material from the influnce of an external magnetic field, the materials should be kept Options:
  A) square steel ring
  B) triangular zinc ring
  C) soft iron ring
  D) loop of copper wire
  Show Answer
  The correct answer is C .
• Question 1010: A machine has an efficiency of 60%. If the machine is required to overcome a load of 30 N with a force of 20 N calculate its mechanical advantage? Options:
  A) 0.7
  B) 0.9
  C) 1.5
  D) 2.5
  E) 10.0
  Show Answer
  The correct answer is C .