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 1141: What types of mirror are capable of producing parallel beams of light such as those arising from the headlamps of a car? Options:
  A) Parabolic mirrors
  B) Plane mirrors
  C) Cylindrical mirrors
  D) Spherical mirrors
  Show Answer
  The correct answer is A .
• Question 1142: Natural radioactivity consists of the emission of Options:
  A) $\alpha$ -particle and $\beta$ rays
  B) $\alpha$ -particle and X-rays
  C) $\gamma$-rays and X-rays
  D) $\alpha$-particle, $\beta$ rays and $\gamma$-rays
  E) $\alpha$ -particle, $\beta$ rays, $\gamma$-rays and X-rays
  Show Answer
  The correct answer is D .
• Question 1143: A metal block of mass 5kg lies on a rough horizontal platform. If a horizontal force of 8N applied to the block through its center of mass just slides the block on the platform, then the coefficient of limiting friction between the block and platform is Options:
  A) 0.16
  B) 0.63
  C) 0.80
  D) 1.60
  E) 2.00
  Show Answer
  The correct answer is A .
• Question 1144:

  

  Find the effective resistance in the diagram above

  Options:
  A) 6 Ω
  B) 12 Ω
  C) 18 Ω
  D) 24 Ω
  Show Answer
  The correct answer is D .
• Question 1145: The lack of power of accommodation which is mainly due to the hardening of the eye lens and is usual with onset of old age is called? Options:
  A) myopia
  B) hypermyopia
  C) presbyopia
  D) astigmatism
  E) eye ring
  Show Answer
  The correct answer is C .
• Question 1146:

  A turning fork of frequency 340Hz is vibrated just above a cylindrical tube of height 1.2m. If water is slowly poured into the tube, at what maximum height will resonance occur.

  [speed of sound in air = 340ms^-1]

  Options:
  A) 0.95m
  B) 0.60m
  C) 0.50m
  D) 0.45m
  Show Answer
  The correct answer is D .
• Question 1147:

  The electrolyte used in the Nickel-Iron (NiFe) accumulator is

  Options:
  A) dilute tetraoxosulphate(VI) acid
  B) barium chloride solution
  C) potassium hydroxide solution
  D) sodium hydroxide solution
  Show Answer
  The correct answer is C .
• Question 1148:

  

  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 1149:

  A uniform rod PQ of length 1m and mass 2kg is pivoted at the end p. If load of 14N is placed at the center of the rod, find the force that should be applied vertically upwards at Q to maintain the rod at equilibrium horizontally [g = 10ms^-2]

  Options:
  A) 68N
  B) 28N
  C) 17N
  D) 7N
  Show Answer
  The correct answer is C .
• Question 1150: If the volume of a gas increases steadily as the temperature decreases at constant pressure, the gas obeys Options:
  A) Graham's Law
  B) Boyle's Law
  C) Pressure law
  D) Charles Law
  E) No Correct Option
  Show Answer
  The correct answer is B .