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 401: A transistor function mainly as a Options:
  A) switch and amplifier
  B) rectifier and an amplifier
  C) charge storer and an amplifier
  D) charge storer and a switch
  Show Answer
  The correct answer is A .
• Question 402:

  Which of the following will increases the boiling point of water?I. Taking it to a high altitude

  II. Dissolving a salt into it

  III. Heating it in a sealed flask

  IV. Increasing the rate of heat supply.

  Options:
  A) I only
  B) III & IV only
  C) II & III only
  D) II only
  Show Answer
  The correct answer is B .
• Question 403: Mr. F. Abioye observed his image though a plane mirror, kept a distance way from him at 4.7m in his room at what distance is the image found from Abioye eye? Options:
  A) 9.4m
  B) 7.5m
  C) 5.7m
  D) 6.9m
  Show Answer
  The correct answer is A .
• Question 404:

  A ship travelling towards a cliff receives the echo of its whistle after 3.5 seconds. A short while later, it receives the echo after 2.5 seconds. If the speed of sound in air under the prevalling condition is 250ms-1, how much closer is the ship to the cliff?

  Options:
  A) 10m
  B) 350m
  C) 175m
  D) 125m
  Show Answer
  The correct answer is D .
• Question 405: Three cells each of e.m.f. 1.5v and an internal resistance of 1.0$\mathrm{\Omega }$ are connected in parallel across a load resistance of 2.67$\mathrm{\Omega }$. Calculate the current in the load? Options:
  A) 0.26A
  B) 0.41A
  C) 0.50A
  D) 0.79A
  Show Answer
  The correct answer is C .
• Question 406: A ball of mass 0.1kg moving with velocity of 20ms^-1 is hit by a force which acts on it for 0.02s. If the ball moves off in the opposite direction with a velocity of 25ms^-1 , calculate the magnitude of the force. Options:
  A) 25N
  B) 100N
  C) 125N
  D) 225N
  E) 250N
  Show Answer
  The correct answer is D .
• Question 407:

  In semi-conductor, the carriers of current at room temperature are

  Options:
  A) electrons only
  B) electrons and holes
  C) holes only
  D) electron and ions
  Show Answer
  The correct answer is B .
• Question 408: The battery connection that permits current to flow across a p-n junction is called? Options:
  A) reverse baised
  B) forward baised
  C) amplification.
  D) rectification
  Show Answer
  The correct answer is B .
• Question 409: A calibrated potentiometer is used to measure the e.m.f. of a cell because the Options:
  A) internal resistance of a cell is small compared with that of the potentiometer
  B) potentiometer has a linear scale
  C) potentiometer takes no current from the cell
  D) resistance of the potentiometer is less than that of a voltmeter
  Show Answer
  The correct answer is C .
• Question 410: A wave travels a distance of 20 cm in 3s. The distance between successive crests of the wave is 4cm. What is the frequency of the wave? Options:
  A) 0.60Hz
  B) 1.67Hz
  C) 7.50Hz
  D) 15.00Hz
  E) 26.67Hz
  Show Answer
  The correct answer is B .