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 631: When two objects P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that of Q. The mass of P is half that of Q. The ratio of the specific heat capacity pf P to Q is Options:
  A) 1:4
  B) 4:1
  C) 1:1
  D) 2:1
  Show Answer
  The correct answer is C .
• Question 632: One end of a long wire is fixed while a vibrator is attached to the other end. When the vibrator is energized, the types of waves generated in the wire are Options:
  A) stationary and longitudinal
  B) stationary and transverse
  C) progressive and transverse
  D) progressive and longitudinal
  Show Answer
  The correct answer is C .
• Question 633:

  Neutrons were discovered by

  Options:
  A) Faraday
  B) Dalton
  C) James Chadwick
  D) Rutherford
  Show Answer
  The correct answer is C .
• Question 634: From the kinetic theory of gases, temperature is a Options:
  A) form of energy and is proportional to the total kinetic energy of the molecules
  B) form of energy and is proportional to the average kinetic energy of the molecules
  C) physical property and is proportional to the total kinetic energy of the molecules
  D) physical property and is proportional to the average kinetic energy of the molecules
  Show Answer
  The correct answer is D .
• Question 635: Which of the following statement is TRUE of ultraviolet, visible and infra-red rays? Options:
  A) they are all electromagnetic waves with the same wavelength
  B) ultra-violet rays have shorter wavelengths than infra-red rays and produce flourescence
  C) infrared rays have shorter wavelength than visible light and produce the sensation of heat
  D) the wavelenghts increase in the sequence: visible, ultra-violet, infra-red
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  The correct answer is B .
• Question 636: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 637: 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
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  The correct answer is A .
• Question 638: 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 639: In alternating current theory, the units of impedance, r.m.s. voltage and resonance frequency are respectively equal to Options:
  A) volt, ampere and hertz
  B) ohms, volt and hertz
  C) watt, ohms and radian
  D) ohms, hertz and joule
  Show Answer
  The correct answer is B .
• Question 640: A lens of focal length 12.0cm forms an upright image three times the size of a real object. The distance between the object and the images is Options:
  A) 8.0cm
  B) 16.0cm
  C) 24.0cm
  D) 32.0cm
  Show Answer
  The correct answer is D .