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 111:

  

  In the circuit above, the ammeter reads a current of 5.0 A when R = 8Ω and reads 7.0A when R = 5Ω. The value of the unknown resistance X is

  Options:
  A) 10.0Ω
  B) 7.5Ω
  C) 5.0Ω
  D) 2.5Ω
  Show Answer
  The correct answer is D .
• Question 112: A body of mass 100g moving with a velocity of 10.0ms^-1 collides with a wall. If after collision, it moves with a velocity of 2.0ms^-1 in the opposite direction, calculate the change in momentum. Options:
  A) 0.8Ns
  B) 1.2Ns
  C) 12.0Ns
  D) 80.0Ns
  Show Answer
  The correct answer is B .
• Question 113: The principle of transmissibility of pressure in a fluid at rest in all directions is known as Options:
  A) Archimede's principle
  B) Flotation Principle
  C) Newton's lwa
  D) Pascal's law
  E) Boyle's law
  Show Answer
  The correct answer is D .
• Question 114: The main purpose of the transformer in an a.c radio set is to? Options:
  A) increase power to the radio
  B) step up the voltage
  C) convert energy from a.c to d.c
  D) step down the voltage
  Show Answer
  The correct answer is D .
• Question 115:

  ${}_{92}^{235}U{+}_0^{1}n{\to }_{56}^{144}Ba{+}_{36}^{90}Kr+2X$

  In the reaction above, X is

  Options:
  A) electron
  B) proton
  C) neutrino
  D) neutron
  Show Answer
  The correct answer is D .
• Question 116: Which of the following is NOT directly associated with direct current (DC)? Options:
  A) A dry cell
  B) a moving coil galvanometer
  C) a transformer
  D) a lead- acid accumulator
  E) a commutator
  Show Answer
  The correct answer is C .
• Question 117: Heat losses to the surrounding is possible through the following except Options:
  A) Conduction
  B) Convection
  C) Radiation
  D) Expansion
  Show Answer
  The correct answer is D .
• Question 118:

  Which of the following statements are correct of the production and propagation of waves?

  I. vibration produces waves

  II. waves transmit energy along the medium

  III. the medium through which the wave travels does not travel with the wave

  IV. waves do not require any medium for transmission

  Options:
  A) I and IV only
  B) II and IV only
  C) III and IV only
  D) I, II and III only
  Show Answer
  The correct answer is D .
• Question 119: The correct expression for the potential at a point distance r from a charge q in an electric field is Options:
  A)

  _q2

  4πεor2

  
  B)

  _q2

  4πεor

  
  C)

  _q

  4πεor2

  
  D)

  _q

  4πεor

  
  Show Answer
  The correct answer is D .
• Question 120: The production of pure spectrum could easily be achieved using a? Options:
  A) glass prism with a pin
  B) triangular prism with two convex lens
  C) traingular prism only
  D) triangular prism with two concave lenses
  Show Answer
  The correct answer is B .