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 831: 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 832: An object 4 cm high is placed 15 cm from a concave mirror of focal length 5 cm. The size of the image is Options:
  A) 2 cm
  B) 3 cm
  C) 4 cm
  D) 5 cm
  Show Answer
  The correct answer is A .
• Question 833: Which of the following electromagnetic waves has the highest frequency? Options:
  A) utra - violet rays
  B) radio waves
  C) x - rays
  D) infrared - rays
  Show Answer
  The correct answer is C .
• Question 834: Satellite communication network makes use of? Options:
  A) visible light
  B) sound wave
  C) radio wave
  D) infra-red wave
  Show Answer
  The correct answer is C .
• Question 835: 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 836: Which of the following affects the period of a simple pendulum? i. mass of the pendulum bob. ii. length of the pendulum. iii. acceleration due to gravity. Options:
  A) i, ii, and iii
  B) ii and iii only
  C) i and iii only
  D) i and ii only
  Show Answer
  The correct answer is B .
• Question 837: A vapour is said to be saturated when Options:
  A) a dynamic equilibrium exists between liquid molecules and the vapour molecules
  B) a dynamic aquilibrium exists such that more molecules return to the liquid than are living it
  C) the temperature of the vapour varies
  D) the vapour pressure is atmospheric
  Show Answer
  The correct answer is A .
• Question 838: A platinum-resistance thermometer has a resistance of 59 at 0^oC and 9Ω at l00^oC. Assuming that resistance changes uniformly with temperature, calculate the resistance of the thermometer when the temperature is 45^oC Options:
  A) 13.9 Ω
  B) 8.9 Ω
  C) 6.8 Ω
  D) 3.2 Ω
  E) 1.8 Ω
  Show Answer
  The correct answer is C .
• Question 839: The small droplet of water that forms on the grass in the early hours of the morning is Options:
  A) hail
  B) dew
  C) fog
  D) mist
  Show Answer
  The correct answer is B .
• Question 840:

  A stone is released from a height of 80m above the ground. Calculate its velocity just before it strikes the ground. (g=10ms^-2)

  Options:
  A) 25ms^-1
  B) 40 ms^-1
  C) 55 ms^-1
  D) 65ms^-1
  E) 80 ms^-1
  Show Answer
  The correct answer is B .