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 81: 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 82:

  

  The figure above represents a frictionless pulley system in which a weight W is in equilibrium with a weight of 40N. Find the value of W.

  Options:
  A) 13.3N
  B) 20.0N
  C) 40.0N
  D) 80.0N
  Show Answer
  The correct answer is C .
• Question 83: Every house supplied with electricity is provided with a box of fuses so that Options:
  A) the consumption of electricity can be recorded
  B) people residing in the house will not have an electric shock if they touch a live wire
  C) the total current drawn from the mains can be limited
  D) the voltage supply can be stabilized
  E) it serves as a standby supply when there is a power failure
  Show Answer
  The correct answer is C .
• Question 84: A projectile fired with initial velocity, u will attain its maximum height H when the angle of projection θ is Options:
  A) 30°
  B) 45°
  C) 60°
  D) 75°
  E) 90°
  Show Answer
  The correct answer is E .
• Question 85:

  The velocity y of a particle in a time t is given by the equation

  Y = 10 + 2t²

  Find the instantaneous acceleration after 5 seconds

  Options:
  A) 60 ms^-2
  B) 20 ms^-2
  C) 15 ms^-2
  D) 10 ms^-2
  Show Answer
  The correct answer is B .
• Question 86: A 120V, 60W lamp is to be operated on 220V ac supply mains. calculate the value of non inductive resistance that would be required to ensure that the lamp is run on correct value Options:
  A) 100Ω
  B) 200Ω
  C) 300Ω
  D) 500Ω
  Show Answer
  The correct answer is B .
• Question 87: When very hot water is poured into a thin-walled glass container, it is less likely to break because Options:
  A) all parts of the container got heated-uniformly
  B) glass can withstand a very high temperature
  C) the molecules of glass are too far apart to cause breakages of the container
  D) the outer part of the container is cooler than the inner part
  E) thin glass does not expand fast
  Show Answer
  The correct answer is A .
• Question 88:

  A wire of length 10m is cooled from 50^oC to 10^oC. Calculate the decrease in the length of the wire. [c = 3 x 10^-5K^-1]

  Options:
  A) 1.8 x 10^-4m
  B) 1.5 x 10^-4m
  C) 1.5 x 10^-3m
  D) 1.8 x 10^-3m
  Show Answer
  The correct answer is C .
• Question 89: A wave has a frequency of 2Hz and a wavelength of 30cm. The velocity of the wave is Options:
  A) 60.0ms^-1
  B) 6.0ms^-1
  C) 1.5ms^-1
  D) 0.6ms^-1
  Show Answer
  The correct answer is D .
• Question 90:

  A body starts from rest and moves with uniform acceleration of 6ms^-2. What distance does it cover in the third seconds

  Options:
  A) 15m
  B) 18m
  C) 27m
  D) 30m
  Show Answer
  The correct answer is A .