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 101: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E .
• Question 102: A wire of length 100.0m at 30^o has linear expansive of 2x10^-5K^-1 Calculate the length of the wire at a temperature of - 10^oC Options:
  A) 100.08m
  B) 100.04m
  C) 99.96m
  D) 99.92m
  Show Answer
  The correct answer is D .
• Question 103:

  A 20-toothed gear wheel drives a 60-toothed one. If the angular speed of the smaller wheel is 120 rev s^-1, the angular speed of the larger wheel is

  Options:
  A) 3 rev s^-1
  B) 40 rev s^-1
  C) 360 rev s^-1
  D) 2400 rev s^-1
  Show Answer
  The correct answer is B .
• Question 104:

  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 105: One of the following readings represents the measurement of the length of a metal rod using vernier callipers, Taking the reading accuracy into consideration, the most likely one is Options:
  A) 5.15cm
  B) 5.165cm
  C) 5.0cm
  D) 5.160cm
  E) 5cm
  Show Answer
  The correct answer is A .
• Question 106:

  

  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 107:

  The electrochemical equivalent of silver is 0.0012g/C. If 36.0g of silver is to be deposited by electrolysis on a surface by passing a steady current for 5mins, the current must be?

  Options:
  A) 6000A
  B) 100A
  C) 10A
  D) 1A
  Show Answer
  The correct answer is B .
• Question 108: Calculate the angle of minimum deviation of a 60^o prism of a refractive index [sin^-10.75 = 49^o] Options:
  A) 38.00^o
  B) 19.47^o
  C) 16.25^o
  D) 49^o
  Show Answer
  The correct answer is A .
• Question 109: Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is Options:
  A) conical
  B) cubical
  C) cylindrical
  D) parabolic
  E) spherical
  Show Answer
  The correct answer is C .
• Question 110: A concave lens of focal length 20cm form an image 1/2 the size of the object. The object distance is Options:
  A) 100cm
  B) $\frac{100}{q}$
  C) 60cm
  D) $\frac{60}{7}$
  E) None of the above
  Show Answer
  The correct answer is C .