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 31: An element and its isotope only differ in the number of Options:
  A) protons
  B) electrons
  C) ions
  D) neutrons
  Show Answer
  The correct answer is D .
• Question 32: A plane sound wave of frequency 85.5Hz and velocity 342ms^-1 is reflected from a vertical wall. At what distance from the wall does the wave have antinode? Options:
  A) 2m
  B) 4m
  C) 1m
  D) 3m
  Show Answer
  The correct answer is C .
• Question 33: For correcting long sight defects in the human eye we require a Options:
  A) converging lens
  B) diverging lens
  C) microscope
  D) periscope
  E) plain glass sheet
  Show Answer
  The correct answer is A .
• Question 34:

  What is the acceleration between two points on a velocity time graph which has coordinates

  (10s, 15 ms^-1)

  And (20 s, 35 ms^-1)?

  Options:
  A) 1.7 ms^-2
  B) 3.50 ms^-2
  C) 1.00 ms^-2
  D) 2.00 ms^-2
  Show Answer
  The correct answer is D .
• Question 35: Any line or section through an advancing wave in which all the particles are in the same phase is called the Options:
  A) wave lenght
  B) wave crest
  C) wave trough
  D) wave amplitude
  E) wave front
  Show Answer
  The correct answer is E .
• Question 36: An object of weight 80kg on earth is taken to a planet where acceleration due to gravity is one-third of its value on earth. The weight of the object on the planet is Options:
  A) 48N
  B) 12N
  C) 27N
  D) 36N
  Show Answer
  The correct answer is C .
• Question 37: When a telescope is in normal use, the final image is at Options:
  A) Infinity
  B) The focus
  C) The radius of curvature
  D) The near point
  Show Answer
  The correct answer is A .
• Question 38:

  A concave mirror of radius of curvature 40 cm forms a real image twice as large as the object.

  The object distance is

  Options:
  A) 10 cm
  B) 30 cm
  C) 40 cm
  D) 60 cm
  Show Answer
  The correct answer is B .
• Question 39: 250g of lead at 170^oC is dropped into 100g of water at 0^oC. If the final temperature is 12^oC, the specific heat of lead is (specific heat of water is 4,200J/kg^oC) Options:
  A) 39.5J/kg^oC
  B) 50.4J/kg^oC
  C) 127.6J/kg^oC
  D) 154.6J/kg^oC
  E) 173.4J/kg^oC
  Show Answer
  The correct answer is C .
• Question 40: An engine of a car of power 80 kW moves on a rough road with a velocity of 32 ms^-1. The forces required to bring it to rest is Options:
  A) 2.56 x 10⁶N
  B) 2.50 x 10⁶N
  C) 2.80 x 10³N
  D) 2.50 x 10³N
  Show Answer
  The correct answer is D .