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 461: A boy observes a piece of stone at the bottom of a river 6.0m deep. If he looks from the surface of the river, what is the apparent distance of the stone from him? [Refractive Index of Water = 4/3] Options:
  A) 8.0m
  B) 5.5m
  C) 5.0m
  D) 4.5m
  Show Answer
  The correct answer is D .
• Question 462:

  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 463: 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 .
• Question 464: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 465: A man standing 300m away from the wall sounds a whistle. The echo from the wall reaches him 1.8sec. later, calculate the velocity of sound in air Options:
  A) 540.0ms^-1
  B) 333.3ms^-1
  C) 270.0ms^-1
  D) 166.7ms^-1
  E) 83.3ms^-1
  Show Answer
  The correct answer is B .
• Question 466: Calculate the angle of minimum deviation for a ray which is refracted through an equiangular prism of refractive index 1.4 Options:
  A) 60⁰
  B) 29⁰
  C) 99⁰
  D) 90⁰
  Show Answer
  The correct answer is B .
• Question 467:

  The limiting frictional force between two surfaces depends on

  I. the normal reaction between the surfaces

  II. the area of surface in contact

  III. the relative velocity between the surfaces

  IV. the nature of the surfaces

  Options:
  A) I only
  B) II only
  C) III only
  D) I and IV only
  Show Answer
  The correct answer is D .
• Question 468:

  

  In the circuit above, three resistors, 2Ω, 4Ω and 12Ω are connected in parallel and a 12V battery is connected across the combination. The current flowing through the 12Ω resistors is

  Options:
  A) 14.4 A
  B) 1.0 A
  C) 3.2 A
  D) 9.6 A
  Show Answer
  The correct answer is B .
• Question 469: A real image three times the size of an object is formed 24cm from a converging mirror. what is the focal length of the mirror. Options:
  A) 16cm
  B) 6cm
  C) 8cm
  D) 12cm
  Show Answer
  The correct answer is B .
• Question 470: The charge carriers in gasses are Options:
  A) ions only
  B) electrons and ions
  C) electrons and holes
  D) electrons only
  Show Answer
  The correct answer is A .