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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 81:
The volume of 0.354g of helium at 273°C and 114cm of mercury pressure is 2667cm\(^3\). Calculate the volume
  • A 2000.25 cm\(^3\)
  • B 200.025 cm\(^3\)
  • C 4003.27 cm\(^3\)
  • D 2010.25 cm\(^3\)
View Answer & Explanation
Question 82:

In the study of Physics, temperature and heat are often confused with each other. Which of the following statements correctly defines these two elements?
  • A Temperature is a measure of the average kinetic energy of the molecules of a substance
  • B Heat is a measure of the total kinetic energy of the molecules in a system
  • C Different materials require different amounts of heat to cause a given change in temperature
  • D All of the above
View Answer & Explanation
Question 83:
A gas at a volume of V\(_{0}\) in a container at pressure p\(_{0}\) is compressed to one-fifth of its volume. What will be its pressure if the magnitude of its original temperature T is constant?
  • A \(\frac{p_{0}} {5}\)
  • B \(\frac{4p_{0}}{5}\)
  • C P\(_{0}\)
  • D 5P\(_{0}\)
View Answer & Explanation
Question 84:
A lead bullet of mass 0.05kg is fired with a velocity of 200ms\(^{-1}\) into a block of mass 0.95kg. Given that the lead block can move freely, the final kinetic energy after impact is?
  • A 50J
  • B 100J
  • C 150J
  • D 200J
View Answer & Explanation
Question 85:
A given mass of gas has a pressure of 80 Nm\(^{-2}\) at a temperature of 47 C. If the temperature is reduced to 27 C with volume remaining constant, the new pressure is?
  • A 46.0 Nm\(^{-2}\)
  • B 75.0 Nm\(^{-2}\)
  • C 80.0 Nm\(^{-2}\)
  • D 85.3 Nm\(^{-2}\)
View Answer & Explanation