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 1981: The sound of an electricity bell dies down slowly when air is slowly pumped out from a bottle because Options:
  A) the wavelength of sound becomes greater in the bottle
  B) sound cannot pass through the bottle
  C) sound needs a material medium
  D) sound can pass through a vacuum
  Show Answer
  The correct answer is C .
• Question 1982: If a plastic sphere floats in water (density = 1000kgm³) with 0.5 of its volume submerged, and floats in oil with 0.4 of its volume submerged the density of the oil is Options:
  A) 800kgm³
  B) 1200kgm³
  C) 1250kgm³
  D) 2000kgm³
  Show Answer
  The correct answer is A .
• Question 1983: The thermos flask is designed to? Options:
  A) prevent heat loss or gain by conduction, convection amd radiation
  B) store hot tea or water
  C) prevent heat gain by conduction, convection and radiation
  D) prevent head lost conduction, convention and radiation
  Show Answer
  The correct answer is A .
• Question 1984:

  

  In the circuit above, three resistors, 2Ω, 4Ω and 12Ω are connected in parallel and a 12V battery is connected across the combination. The current flowing through the 12Ω resistors is

  Options:
  A) 14.4 A
  B) 1.0 A
  C) 3.2 A
  D) 9.6 A
  Show Answer
  The correct answer is B .
• Question 1985: 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 1986: The wavelength of ultraviolet radiation is 400nm. If the speed of light in air is 3 x 10⁸ms^-1, then the frequency of the ultraviolet radiation is Options:
  A) 1.3 x 10¹⁵Hz
  B) 7.5 x 10⁵Hz
  C) 1.2 x 10¹¹Hz
  D) 7.5 x 10¹⁴Hz
  Show Answer
  The correct answer is B .
• Question 1987:

  A body starts from rest and moves with uniform acceleration of 6ms^-2. What distance does it cover in the third seconds

  Options:
  A) 15m
  B) 18m
  C) 27m
  D) 30m
  Show Answer
  The correct answer is A .
• Question 1988: Gamma rays are produced when Options:
  A) high velocity electrons are abruptly stopped in metals
  B) energy changes occur within the nucleus of atoms
  C) energy changes occur within the electronic structure of atoms
  D) electrons are deflected in very strong magnetic fields
  Show Answer
  The correct answer is B .
• Question 1989:

  Water is not a good thermometric liquid because it?

  Options:
  A) expands unevenly between 0 ºC and 4 ºC
  B) maintains fixed density
  C) has low freezing point
  D) wets glass
  Show Answer
  The correct answer is D .
• Question 1990: The charge carriers in gasses are Options:
  A) ions only
  B) electrons and ions
  C) electrons and holes
  D) electrons only
  Show Answer
  The correct answer is A .