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 1521:

  Metal rods of length 20m each are laid end to end to form a bridge at 25^oC. What gap will be provided between consecutive rails for the bridge to withstand 75^oC?

  [Linear expansivity of the material = 2.0 x 10^-5K^-1]

  Options:
  A) 0.20m
  B) 0.22m
  C) 0.25m
  D) 0.02m
  Show Answer
  The correct answer is D .
• Question 1522: A machine is used to lift a load of 20 N through a height of 10 m. if the efficiency of the machine is 40%, how much work is done? Options:
  A) 80 J
  B) 500 J
  C) 300 J
  D) 120 J
  Show Answer
  The correct answer is B .
• Question 1523: A student is at a height 4m above the ground during a thunderstorm. Give that the potential difference between the thundercloud and the ground is 10⁷v, the electric field created by the storm is Options:
  A) 2.0 * 10⁶ NC ^-1
  B) 2. 5 * 10⁶ NC ^-1
  C) 1.0 * 10⁷ NC ^-1
  D) 4.0 * 10⁷ NC ^-1
  Show Answer
  The correct answer is B .
• Question 1524:

  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 1525:

  

  The diagram above is the heating curve for a solid QR is the

  Options:
  A) melting region
  B) boiling region
  C) sublimation region
  D) evaporating process
  Show Answer
  The correct answer is A .
• Question 1526:

  A magnet relay is a device used for?

  Options:
  A) reading the magnitude of magnetic flux
  B) controlling another circuit carrying larger current
  C) turning in sports
  D) storing magnetic field
  Show Answer
  The correct answer is B .
• Question 1527: How much heat is required to convert 5.0g of ice at 0 ° C to water at the boiling point? (Specific latent heat of ice = 336Jg^-1 specific heat capacity of water = 4.2Jg^-1K^-1) Options:
  A) 420 J
  B) 1680 J
  C) 1701 J
  D) 2100 J
  E) 3780 J
  Show Answer
  The correct answer is E .
• Question 1528:

  

  What is the resultant capacity of the circuit

  Options:
  A) 1.5µF
  B) 18.0µF
  C) 6.0µF
  D) 6.8µF
  E) 8.83µF
  Show Answer
  The correct answer is A .
• Question 1529: A body executing simple harmonic motion has an angular speed of 2π radians. Its period of oscillation is (π 3.14). Options:
  A) 0.05s
  B) 1.00s
  C) 2.00s
  D) 3.14s
  E) 6.28s
  Show Answer
  The correct answer is B .
• Question 1530: Which of the following ammeters may be used to measure alternating currents? i. moving-coil ammeter ii. moving-iron ammeter iii. hot-wire ammeter Options:
  A) i and ii only
  B) ii and iii only
  C) i and iii only
  D) i, ii, and iii
  Show Answer
  The correct answer is D .