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 1741:

  

  The diagram above shows the prism arrangement in a

  Options:
  A) binocular
  B) spectrometer
  C) periscope
  D) projector
  Show Answer
  The correct answer is C .
• Question 1742:

  

  Fig 1 is a graph of force against extension for a spiral spring, the force constant of the spring is given by the

  Options:
  A) slope of the linear prtion of the graph
  B) length of the linear portion of the graph
  C) area under the linear portion of the graph
  D) area under the entire graph
  Show Answer
  The correct answer is A .
• Question 1743: Counting of currency notes with moist fingers is based on the principles of? Options:
  A) diffusion
  B) cohesion
  C) adhesion
  D) viscosity
  Show Answer
  The correct answer is C .
• Question 1744: In a fission process, the decrease in mass is 0.01%. How much energy could be obtained from the fission of 0.1g of the material Options:
  A) $9.0\times {10}^{9}J$
  B) $9.0\times {10}^{10}J$
  C) $6.3\times {10}^{11}J$
  D) $9.0\times {10}^{11}J$
  Show Answer
  The correct answer is A .
• Question 1745: The internationally agreed system of units(SI) for physical measurements are Options:
  A) Ib, ft, sec
  B) g, m, sec
  C) kg, m, sec
  D) cm, g, sec
  E) kg, cm, sec
  Show Answer
  The correct answer is C .
• Question 1746:

  Electrons were discovered by

  Options:
  A) Dalton
  B) James Charwick
  C) J.J. Thompson
  D) Niels Bohr
  Show Answer
  The correct answer is C .
• Question 1747: In a reverse biased junction diode, current flows in by Options:
  A) positive holes alone
  B) majority carriers
  C) electron alone
  D) minority carriers
  Show Answer
  The correct answer is D .
• Question 1748: If the threshold frequency for tungsten is 1.3 x 10¹⁵Hz, what is its work function?
  [H = 6.6 x 10^-34 Js] Options:
  A) 8.58 x 10^-19 J
  B) 8.50 x 10^-15 J
  C) 8.58 x 10^-17 J
  D) 8.85 x 10^-18
  Show Answer
  The correct answer is A .
• Question 1749:

  The pitch of a musical note is determined by the frequency of the sound wave that it produces. If two instruments produce sound waves at the same frequency, which of the following factors will most affect the difference in the sound quality (timbre) of the instruments?

  Options:
  A) The shape of the instrument
  B) The tension of the string
  C) The size of the instrument
  D) The material of the instrument
  Show Answer
  The correct answer is A .
• Question 1750: A solid weigh 10 .00 N in air, 6 N when fully immersed in water and 7 . 0 N when fully immersed in a liquid X. Calculate the relative density of the liquid, X. Options:
  A) 5/3
  B) 4/3
  C) 3/4
  D) 7/10
  Show Answer
  The correct answer is C .