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Thursday, 29 October 2026
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Physics Past Questions and Answers

Jamb 2017 Physics Questions

Question 6:
Under what conditions are cathode rays produced in a discharge tube?
  • A High pressure and low voltage
  • B High pressure and high voltage
  • C Low pressure and low voltage
  • D Low pressure and high volatge
View Answer & Explanation
Question 7:
Under which of the following conditions is workdone
  • A A man supports a heavy food above his head with his hands
  • B A boy climbs onto a table
  • C A man pushes unto a table
  • D A woman holds a pot of water
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Question 8:
Calculate the specific latent heat of vaporization of steam of 1.13 x 106J of heat energy is required to convert 15kg of steam to water.
  • A 7.53 x 105 Jkg\(^{-1}\)
  • B 7.53 x 10-2Jkg\(^{-1}\)
  • C \(7.53 \times 10^{4}\)Jkg\(^{-1}\)
  • D 7.53 x 10-3Jkg\(^{-1}\)
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Question 9:
A cell of internal resistance 2 π supplies current to a 6 π resistor. The efficiency of the cell is
  • A 12.0%
  • B 25.0%
  • C 33.3%
  • D 75.0%
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Question 10:
Which of the following statements is NOT correct?
  • A Molecules of a liquid are stationary
  • B Brownian motion is an evidence of particle nature of matter
  • C Matter is made up of molecules
  • D The molecules of matter are in constant motion
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