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 391: If a water pump at Kainji Dam is capable of lifting 1000kg of water through a vertical height of 10m in 10s, the power of the pump is [g = 10ms^-2] Options:
  A) 1.0kW
  B) 10.0kW
  C) 12.5kW
  D) 15.0kW
  E) 20.0kW
  Show Answer
  The correct answer is B .
• Question 392:

  Arrange the following in the order of their increasing frequency.I. Visible light

  II. Gamma rays

  III. Radio waves

  IV. Infra-red radiation

  V. Ultra-violet radiation

  Options:
  A) I, II, III, IV, V
  B) II, III, IV, V, I
  C) III, IV, V, I, II
  D) IV, III, I. V, II
  E) III, IV, I,V, II
  Show Answer
  The correct answer is E .
• Question 393: A ray of light strikes a plane mirror at an angle of incidence of 35°. If the mirror is rotated through 10°, through what angle is the reflected ray rotated? Options:
  A) 70°
  B) 45°
  C) 25°
  D) 20°
  Show Answer
  The correct answer is D .
• Question 394: The most suitable type of mirror used for the construction of the search light is the Options:
  A) concave mirror
  B) convex mirror
  C) spherical mirror
  D) parabolic mirror
  Show Answer
  The correct answer is D .
• Question 395: A gas at a volume of V₀ in a container at pressure P₀ is compressed to one-fifth of its volume. What will be its pressure if the magnitude of its original temperature T is constant? Options:
  A) P₀/5
  B) 4P₀/5
  C) P₀
  D) 5P₀
  Show Answer
  The correct answer is D .
• Question 396: The resultant of two forces P and Q is least when the angle between them is Options:
  A) 0°
  B) 45°
  C) 60°
  D) 90°
  E) 180°
  Show Answer
  The correct answer is E .
• Question 397: A ball of mass 0.1kg is thrown vertically upwards with a speed of 10ms^-1 from the top of a tower 10m high. Neglecting air resistance, its total energy just before hitting the ground is(take g = 10ms^-2) Options:
  A) 5 J
  B) 10 J
  C) 15 J
  D) 20 J
  Show Answer
  The correct answer is C .
• Question 398:

  The pitch of a musical note is determined by the frequency of the sound wave that it produces. If two instruments produce sound waves at the same frequency, which of the following factors will most affect the difference in the sound quality (timbre) of the instruments?

  Options:
  A) The shape of the instrument
  B) The tension of the string
  C) The size of the instrument
  D) The material of the instrument
  Show Answer
  The correct answer is A .
• Question 399: Which of the following phenomena is responsible for the spherical shape of soap bubbles? Options:
  A) Adhesion
  B) Capillarity
  C) Cohesion
  D) Osmosis
  E) Surface tension
  Show Answer
  The correct answer is C .
• Question 400: An object of mass 2 kg moves with a velocity of 10 ms¹ round at circle of radius 4 m. Calculate the centripetal force on the object Options:
  A) 25 N
  B) 100 N
  C) 50 N
  D) 40 N
  Show Answer
  The correct answer is C .