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 1701: The graphite rods surrounding the uranium fuel rods in a nuclear reactor, are used to Options:
  A) absorb the neutrons and hence halt the nuclear process
  B) create the neutrons and hence slow up the nuclear process
  C) slowdown the neutrons and hence slow up the nuclear process
  D) speed up the neutrons and hence speed up the nuclear process
  Show Answer
  The correct answer is C .
• Question 1702:

  Which of the following conditions are necessary and sufficient for total internal reflection to take place at the boundary between two optical media?

  I. Light is passing from optical denser medium to optically less dense medium

  II. Light is passing from optically less dense medium to optically denser medium

  III. Angle of incidence is greater than a certain critical value

  IV. Angle of incidence is lesser than a certain critical value

  Options:
  A) I and II only
  B) II only III only
  C) III and IV only
  D) I and III only
  Show Answer
  The correct answer is D .
• Question 1703: A transverse wave and a longitudinal wave travelling in the same direction in a medium differ essentially in their Options:
  A) frequency
  B) amplitude
  C) direction of vibration of the particles of the medium
  D) period of vibration of the particles of the medium
  Show Answer
  The correct answer is C .
• Question 1704: Which of the following instruments helps to maintain the correct humidity and temperature of a building? Options:
  A) A compressor
  B) A refrigerator
  C) Air blower
  D) Air conditioner
  Show Answer
  The correct answer is D .
• Question 1705: The combination of sound waves with different frequencies is known as Options:
  A) interference
  B) diffraction
  C) superposition
  D) forced vibration
  E) resonance
  Show Answer
  The correct answer is C .
• Question 1706: Two spheres of masses 5.0 kg and 10.0 kg are 0.3 m apart. Calculate the force of attraction between them?
  [G = 6.67 X 10^-11 Nm² Kg²] Options:
  A) 3.50 x 10^-10N
  B) 3.71 x 10^-8 N
  C) 3.57 x 10^-2N
  D) 4.00 x 10²N
  Show Answer
  The correct answer is B .
• Question 1707:

  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 1708: A cell of internal resistance 2 ohms supplies current to a 6 ohms resistor. The efficiency of the cell is Options:
  A) 12.0%
  B) 25.0%
  C) 33.3%
  D) 75.0%
  Show Answer
  The correct answer is D .
• Question 1709: If a current carrying coil is mounted on a metal frame, the back e.m.f. induced in the coil causes Options:
  A) inductance
  B) eddy currents
  C) elecro-magnetism
  D) dipole moment
  Show Answer
  The correct answer is B .
• Question 1710:

  

  The figure above shows a plot of angles of deviation through a glass prism when light is incident at θ degrees on the prism. The incident angle that produces the minimum deviation is

  Options:
  A) 20^o
  B) 18^o
  C) 35^o
  D) 25^o
  Show Answer
  The correct answer is D .