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 571:

  The time rate of loss of heat by a body is proportional to the

  Options:
  A) temperature of its surroundings
  B) temperature of the body
  C) difference in temperature between the body and its surroundings
  D) ratio of the temperature of the body to that of its surroundings
  Show Answer
  The correct answer is C .
• Question 572: Temperature is the measure of the Options:
  A) quantity of heat transferred into the molecules of an object
  B) mean kinetic energy of the molecules of the object
  C) kinetic energy of any individual molecule of the substance
  D) amount of work done by the molecules of the object
  Show Answer
  The correct answer is B .
• Question 573:

  

  The net capacitance of the circuit shown above is

  Options:
  A) 8.0µF
  B) 6.0µF
  C) 4.0µF
  D) 2.0µF
  Show Answer
  The correct answer is D .
• Question 574: A transformer has 300 turns of wire in the primary coil and 30 turns in the secondary coil.If the input voltage is 100 volts, the output voltage is Options:
  A) 5 volts
  B) 10 volts
  C) 15 volts
  D) 20 volts
  E) 25 volts
  Show Answer
  The correct answer is B .
• Question 575: Calculate the magnitude of the force required to just move a 20kg object along a horizontal surface if the coefficient of friction is 0.2. [g = 10ms^-2] Options:
  A) 400.0N
  B) 40.0N
  C) 4.0N
  D) 0.4N
  Show Answer
  The correct answer is B .
• Question 576: The amount of heat needed to raise the temperature of 10kg of copper by 1k is its Options:
  A) specific heat capacity
  B) heat capacity
  C) latent heat
  D) internal energy
  Show Answer
  The correct answer is B .
• Question 577: Which of the following arrangements of the components of electromagnetic spectrum is in ascending order of wavelengths? Options:
  A) Gamma rays, ultraviolet rays, X- rays, infra - red rays
  B) Gamma rays, X-rays, ultraviolet rays, infra-red rays
  C) infra-red rays, ultraviolet rays, X-rays, gamma rays
  D) Gamma rays, ultraviolet rays, infra-red rays, X-rays
  Show Answer
  The correct answer is B .
• Question 578: An electric iron is rated 1000W, 230V. What is the resistance of its elements? Options:
  A) 51.9Ω
  B) 52.9Ω
  C) 55.9Ω
  D) 57.6Ω
  Show Answer
  The correct answer is B .
• Question 579:

  Which of the following is true of an electrical charge?

  Options:
  A) Positive charge means deficit electrons
  B) Negative charge means excess of electrons
  C) electric current means movement of electrons
  D) All of the above
  Show Answer
  The correct answer is D .
• Question 580: The energy in the nucleus of atoms produce heat which can be used to generate Options:
  A) Kinetic energy
  B) Mechanical energy
  C) Electrical energy
  D) Potential energy
  Show Answer
  The correct answer is A .