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 1701: A piece of wire gauze can be made to lie on water because Options:
  A) the wire guaze is less dense than water
  B) the water molecules repels the wire guaze upwards
  C) the water surface has the effect of an elastic thin skin
  D) of the cohensive forces between the water and the wire guaze molecules
  Show Answer
  The correct answer is C .
• Question 1702: In free fall, a body of mass 1kg drops from a height of 125m from rest in 5s. How long will it take another body of mass 2kg to fall from rest from the same height? [g = 10ms^-1·] Options:
  A) 5s
  B) 10s
  C) 12s
  D) 15s
  Show Answer
  The correct answer is A .
• Question 1703: Find the standard deviation of the following data -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5 Options:
  A) 2
  B) 3
  C) √10
  D) √11
  Show Answer
  The correct answer is C .
• Question 1704:

  I. Use a liquid with a high melting point.

  II. use a liquid of high volume expansivity.

  III. use a capillary tube of large diameter. which of the above best describes how the sensitivity of a liquid-in-glass thermometer can be enhanced?

  Options:
  A) I only
  B) II. only
  C) I and II only
  D) II and III only
  Show Answer
  The correct answer is B .
• Question 1705: If the force and the velocity on a system are each reduced simultaneously by half, the power of the system is Options:
  A) doubled
  B) reduced to a quarter
  C) reduced by half
  D) constant
  Show Answer
  The correct answer is B .
• Question 1706: When the bottom tip of a vibrating tuning fork is held in contact with a wooden box, a louder sound is heard. This phenomenon is known as Options:
  A) beats
  B) echoing
  C) resonance
  D) reverberation
  Show Answer
  The correct answer is C .
• Question 1707: The correct unit of energy density is? Options:
  A) kg m³ s^-2
  B) kg m² s^-2
  C) kg m^-3 s^-2
  D) kg m^-1 s^-2
  Show Answer
  The correct answer is D .
• Question 1708: A rectangular metal block of volume 10^-6m³ at 273k is heated to 573k. If its coefficient of linear expansion is 1.2 x 10^-5k^-1, the percentage change of it volume is Options:
  A) 1.5%
  B) 1.1%
  C) 0.4%
  D) 0.1%
  Show Answer
  The correct answer is B .
• Question 1709:

  Natural radioactivity consists of emission?

  Options:
  A) $\alpha$-particles and $\beta$-rays
  B) $\alpha$-particles and X-rays
  C) $\gamma$-ray and X-rays
  D) $\alpha$-particles and $\beta$-rays and $\gamma$-rays
  Show Answer
  The correct answer is D .
• Question 1710: The energy contained in a wire when it extended by 0.02m by a force 500 N is Options:
  A) 5J
  B) 10J
  C) 10³J
  D) 10⁴
  Show Answer
  The correct answer is A .