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 121: The kinetic theory of photoelectron liberated from a metallic surface depends on the Options:
  A) intensity of the incident radiation
  B) time duration of the incident radiation
  C) temperature of the incident radiation
  D) frequency of the incident radiation
  Show Answer
  The correct answer is D .
• Question 122: Which of the following statements about defects of vision is/are CORRECT? i. for a long sighted person, close objects appear blurred. ii. for a short sighted person, distant objects appear blurred. iii. short sight is corrected by using a pair of converging lenses. Options:
  A) i only
  B) ii only
  C) i and ii only
  D) ii and iii only
  E) i, ii and iii
  Show Answer
  The correct answer is C .
• Question 123: A load of 5N gives an extension of 0.56cm in a wire which obeys Hooke's law. What is the extension caused by a load of 20N? Options:
  A) 1.12cm
  B) 2.14cm
  C) 2.24cm
  D) 2.52cm
  Show Answer
  The correct answer is C .
• Question 124: In a meter bridge experiment, two resistor 2$\mathrm{\Omega }$ and 3$\mathrm{\Omega }$ occupy the left and right gaps respectively. Find the balance point from the left side of the bridge Options:
  A) 20cm
  B) 40cm
  C) 60cm
  D) 80cm
  Show Answer
  The correct answer is B .
• Question 125:

  

  The resultant capacitance in the figure above is

  Options:
  A) 15.0µF
  B) 9.8µF
  C) 1.3µF
  D) 0.8µF
  Show Answer
  The correct answer is D .
• Question 126: When a ball rolls on a smooth level ground, the motion of its center is Options:
  A) translational
  B) oscillatory
  C) random
  D) rotational
  Show Answer
  The correct answer is A .
• Question 127: A narrow beam of white light can be split up into different colours by a glass prism. The correct explanation is that Options:
  A) white light is an electromagnetic wave
  B) the prism has all the colours of the white light
  C) white light has undergone total internal reflection in the prism
  D) different colours of white light travel with different speeds in glass
  E) white ligth consist of yellow, green and red colours
  Show Answer
  The correct answer is D .
• Question 128: An electric generator with a power output of 3.0KW at a voltage of 1.5KV distributes power along cables of resistance 20.0Ω. The power loss in the cables is Options:
  A) 80.0W
  B) 40.0W
  C) 10.0W
  D) 0.1W
  Show Answer
  The correct answer is A .
• Question 129: When equal weights of iron and water are subjected to equal supply of heat, it is found that the piece of iron become more hotter than water after a short time because Options:
  A) the specific heat of iron is higher than that of water
  B) iron is in solid form
  C) water is in liquid form
  D) the specific heat of water is higher than that of iron
  E) the specific heat of iron is infinite
  Show Answer
  The correct answer is D .
• Question 130:

  

  The value of T in the figure above is

  Options:
  A) 30N
  B) 10.0N
  C) 20N
  D) 40N
  Show Answer
  The correct answer is D .