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Monday, 22 June 2026
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Physics Past Questions and Answers

Topic: using the theory to explain:

Jamb Physics Questions - using the theory to explain:

Question 76:
Boiling occurs when the vapour pressure of a liquid is
  • A At the evaporation point
  • B Less than the atmospheric pressure
  • C Greater than the atmospheric pressure
  • D Equal to the atmospheric pressure
View Answer & Explanation
Question 77:
The volume of a fixed mass of gas is 10cm3 when its pressure is 400cmHg. Determine the volume of the gas when its pressure is 200cmHg.
  • A 30cm<sup style='font-size: smaller;'>3</sup>
  • B 40cm<sup style='font-size: smaller;'>3</sup>
  • C 50cm<sup style='font-size: smaller;'>3</sup>
  • D 20cm<sup style='font-size: smaller;'>3</sup>
View Answer & Explanation
Question 78:
A lead bullet of mass 0.05 kg is fired with a velocity of 200 m/s into a lead block of mass 0.95 kg. Given that the lead block can move freely, the final kinetic energy after impact is
  • A 100J
  • B 150J
  • C 50J
  • D 200J
View Answer & Explanation
Question 79:
The process whereby a liquid turns spontaneously into vapour is called
  • A Regelation
  • B Evaporation
  • C Boiling
  • D Sublimation
View Answer & Explanation
Question 80:
When th temperature of a liquid is increased, its surface tension
  • A Increases
  • B Decreases
  • C Remain constant
  • D Increases then decreases
View Answer & Explanation