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 2021:

  I. A liquid boils when its saturated vapor pressure is equal to the external pressure
  II. Dissolved substances in pure water lead to an increase in the boiling point.
  III. When the external pressure is increased, the boiling point increases.
  IV. Dissolved substances in pure water decreases the boiling point

  Which of the above combinations are peculiarities of the boiling point of a liquid?

  Options:
  A) I, II and III only
  B) I, II, III, and IV
  C) I, II, and IV
  D) II, III, and IV
  Show Answer
  The correct answer is A .
• Question 2022:

  

  The diagram above shows a lift pump with valves at P and Q. During a downward stroke of the piston

  Options:
  A) both valves are open
  B) P is open while Q is closed
  C) P is closed while Q is open
  D) Both valves are closed
  Show Answer
  The correct answer is B .
• Question 2023:

  A man will exert the greatest pressurewhen he?

  Options:
  A) lies flat on his back
  B) lies on his belly
  C) stands on both feet
  D) stands on the toes of one foot
  Show Answer
  The correct answer is D .
• Question 2024:

  The pinhole camera works on

  Options:
  A) the principle of the reversibility of light
  B) the principle of the rectilinear propagation of light
  C) Huygen’s principle
  D) the principle of total internal reflection of light
  Show Answer
  The correct answer is B .
• Question 2025: A 0.05kg bullet travelling at 500ms^-1 horizontally strikes a thick vertical wall. It stops after penetrating through the wall horizontal distance of 0.25m. What is the magnitude of the average force the wall exerts on the bullet? Options:
  A) 25N
  B) 50N
  C) 250N
  D) 500N
  E) 25 000N
  Show Answer
  The correct answer is E .
• Question 2026: The force experienced by an object of mass 60.0kg in the moon's gravitational field is 1.002 x 10²N. What is the intensity of the gravitational field? Options:
  A) 0.60Nkg^-1
  B) 1.67Nkg^-1
  C) 6.12 x 10²Nkg^-1
  D) 9.81ms^-2
  Show Answer
  The correct answer is B .
• Question 2027:

  A balloon inflated with helium gas at ground level is released. As it rises through a constant temperature atmosphere.

  Options:
  A) its pressuren reduces but volume remains constant
  B) te product of pressure and volume remains constant
  C) both pressure and volume increases
  D) its pressure remains constant but the volume decreases
  E) both pressure and volume remains constant
  Show Answer
  The correct answer is B .
• Question 2028: The tendon in a man's leg is 0.01m long. If a force of 5N stretches the tendon by 2.0 x 10^-5m, calculate the strain on the muscle. Options:
  A) 5 x 10⁶
  B) 5 x 10²
  C) 2 x 10^-3
  D) 2 x 10^-7
  Show Answer
  The correct answer is C .
• Question 2029: A handbag containing some load weighing 162N is carried by two students each holding the handle of the bag next to him. If each handle is pulled ${60}^{\circ }$ to the vertical, find the force on each student's arm Options:
  A) 81N
  B) 121N
  C) 162N
  D) 324N
  Show Answer
  The correct answer is C .
• Question 2030: When an ebolite rod is rubbed with fur, it has Options:
  A) no charge at all
  B) a negative charge
  C) a positive charge
  D) negative and positive charges
  Show Answer
  The correct answer is B .