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 1691: An object is placed 15cm in front of a concave mirror of focal length 20cm. The image formed is Options:
  A) real, inverted and diminished
  B) real, inverted and magnified
  C) virtual, erect and diminished
  D) virtual, erect and magnified
  E) virtual, inverted and magnified
  Show Answer
  The correct answer is D .
• Question 1692: At what respective values of X, Y and Z would the unit of force, the newton, be dimensionally equivalent to M^xL^yT^z? Options:
  A) -1, 1, 2
  B) 1, 1, -2
  C) 1, -1, 2
  D) -1, 1, -2
  Show Answer
  The correct answer is B .
• Question 1693:

  Transformers are designed so that energy losses are reduced to a minimum. This is achieved through those process.I. Using a soft iron ore

  II. Laminating the iron core to reduce energy loses due to eddy current

  III. Designing an efficient iron core

  Options:
  A) I & II only
  B) II only
  C) I, II, & III only
  D) III only
  Show Answer
  The correct answer is C .
• Question 1694:

  I. Diameter of a small ball bearing.

  II. Thickness of a pieces of paper.

  III. Diameter of a measuring cylinder.

  IV. Length of a piece of wire.

  Which of the above can be measured using a micrometer screw gauge?

  Options:
  A) I, II and IV only .
  B) I and II only
  C) II and III only
  D) III and IV only
  Show Answer
  The correct answer is B .
• Question 1695:

  An astronomical telescope is said to be in normal adjustment when the?

  Options:
  A) eye is accommodated
  B) focal length of an object lens is longer than that of eye piece
  C) final image is at the near point of eye
  D) final image is at infinity
  Show Answer
  The correct answer is D .
• Question 1696: Which of the following statements are TRUE about frictional force? i. it is always a disadvantage ii. it is sometimes a disadvantage iii. it always exist where there is a relative motion of two bodies that are in contact iv. it is sometimes very useful Options:
  A) i, iii only
  B) i, iv only
  C) ii, iii only
  D) ii, iv only
  Show Answer
  The correct answer is D .
• Question 1697: 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 1698:

  The rate of diffusion of gases increases with increase(s) in I. density

  II. temperature

  III, mass. Which is/are correct?

  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 B .
• Question 1699: An object is moving with a velocity of 5m^-1. At what height must a similar body be situated to have a potential energy equal in value with kinetic energy of the moving body? Options:
  A) 25.0m
  B) 20.0m
  C) 1.3m
  D) 1.0m
  Show Answer
  The correct answer is C .
• Question 1700:

  A cannon is fired from town X, after how long is the sound heard at a town Y 4.95 km away?

  [velocity of sound in the air = 330 ms^-1]

  Options:
  A) 30 s
  B) 10 s
  C) 10 s
  D) 15 s
  Show Answer
  The correct answer is D .