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 1891: Young’s modulus of elasticity is the ratio of stress to strain, provided the load does not exceed the Options:
  A) breaking point
  B) elastic limit
  C) plastic limit
  D) stress limit
  E) yield point
  Show Answer
  The correct answer is B .
• Question 1892: The heat required to raise a mass of a substance through 1K is known as Options:
  A) Specific heat capacity
  B) Specific latent heat of vaporization
  C) Capacity latent heat of fusion
  D) Heat capacity
  Show Answer
  The correct answer is D .
• Question 1893: A block and tackle pulley arrangement has 6 pulleys in which an effort of 50N supports a load of 200N, calculate the efficiency of the machine Options:
  A) 80.0%
  B) 76.6%
  C) 66.7%
  D) 60.7%
  Show Answer
  The correct answer is C .
• Question 1894: A machine has a velocity ratio of 4. if it requires 800 N to overcome a load of 1600 N,what is the efficiency of the machine? Options:
  A) 60%
  B) 50%
  C) 40%
  D) 2%
  Show Answer
  The correct answer is B .
• Question 1895:

  

  The diagram above represents a transverse electromagnetic wave travelling with speed 3.0 x 10⁸ms^-1. What is the frequency of the wave.

  Options:
  A) 3.0 x 10⁷Hz
  B) 9.0 x 10⁷Hz
  C) 1.0 x 10⁹Hz
  D) 3.0 x 10⁹Hz
  Show Answer
  The correct answer is D .
• Question 1896:

  Calculate the gravitation force of attraction between two planets of 10²⁴kg and 10²⁷kg separated by a distance of 10²⁰meters.

  Options:
  A) 6.67N
  B) 6.56N
  C) 7.5N
  D) 8.6N
  Show Answer
  The correct answer is A .
• Question 1897:

  Electrons were discovered by

  Options:
  A) Dalton
  B) James Charwick
  C) J.J. Thompson
  D) Niels Bohr
  Show Answer
  The correct answer is C .
• Question 1898: The area under a force-distance graph represents Options:
  A) acceleration
  B) velocity
  C) power
  D) work
  E) momentum
  Show Answer
  The correct answer is D .
• Question 1899: When the r.m.s value of a source of electricity supply is given as 240v, it means that the peak value of the supply is Options:
  A) 240v
  B) 340v
  C) 480v
  D) 57600v
  Show Answer
  The correct answer is B .
• Question 1900: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .