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 561: A body of weight W N rest on a smooth plane inclined at an angle$\theta$^o to the horizontal. What is the resolved part of the weight in Newtons along the plane? Options:
  A) W sin$\theta$
  B) W cos$\theta$
  C) W sec$\theta$
  D) W tan$\theta$
  Show Answer
  The correct answer is A .
• Question 562: Silicon doped with aluminum and germanium doped with arsenic become? Options:
  A) p- and n- types respectively
  B) n- en p- type respectively
  C) p- type semiconductor
  D) n- type semiconductors
  Show Answer
  The correct answer is A .
• Question 563: Which of the following statements about sound is NOT true? Options:
  A) sound is a longitudinal wave
  B) sound can be reflected and refracted like light
  C) sound travels through a vacuum
  D) sound moves faster in a steel wire than in air
  E) sound can ony be produced by vibrating objects
  Show Answer
  The correct answer is C .
• Question 564: The relative densities of zinc, brass, copper, gold and silver are respectively 7.1, 8.5, 8.9, 19.3, 10.5. A metal ornament which weighs 0.425kg and can displace 50 x 10^-6m³m of water is made of Options:
  A) zinc
  B) brass
  C) copper
  D) gold
  E) silver
  Show Answer
  The correct answer is B .
• Question 565: At 4°c, the volume of a fixed mass of water is? Options:
  A) constant
  B) minimum
  C) maximum
  D) zero
  Show Answer
  The correct answer is B .
• Question 566: In a nuclear fusion experiment, the loss of mass amounts to 1.0 x 10^-6kg. The amount of energy obtained from the fusion is Options:
  A) 3.0 x 10^-4J
  B) 3.0 x 10^-1J
  C) 9.0 x 10⁴J
  D) 9.0 x 10¹⁰J
  Show Answer
  The correct answer is D .
• Question 567: The mechanism of heat transfer from one point to another through the vibration of the molecules of the medium is Options:
  A) covection
  B) conduction
  C) radiation
  D) diffusion
  Show Answer
  The correct answer is B .
• Question 568:

  If a force of 50N stretches a wire from 20m to 20.01m, what is the amount of force required to stretch the same material from 20m to 20.05m?

  Options:
  A) 250N
  B) 200N
  C) 100N
  D) 50N
  Show Answer
  The correct answer is A .
• Question 569: Which of the following apparatus will require the smallest fuse rating for its protection? Options:
  A) 60W, 240V
  B) 60W, 40V
  C) 40W, 12V
  D) 40W, 5V
  Show Answer
  The correct answer is A .
• Question 570:

  When two objects A and B are supplied with the same quantity of heat, the temperature change in A is obtained to be twice that of B. The mass of P is half that of Q. The ratio of the specific heat capacity of A to B is

  Options:
  A) 1 : 4
  B) 4 : 1
  C) 1 : 1
  D) 2 : 1
  Show Answer
  The correct answer is C .