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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Structure of Matter and Kinetic Theory

Jamb Physics Questions - Structure of Matter and Kinetic Theory

Question 21:
When fixed mass of an ideal gas expands at constant temperature, which property of the gas molecule increases?
  • A Average number per unit volume
  • B Average kinetic energy
  • C Average speed
  • D Average seperation
  • E Average number of collisions per unit time
View Answer & Explanation
Question 22:
Which of the following elements are real magnetic materials?
  • A Iron, steel and nickel
  • B Copper, steel and iron
  • C Lead, iron and brass
  • D Glass, lead and steel
  • E Stone, air and iron
View Answer & Explanation
Question 23:
a balloon inflated with helium gas at ground level is released. As it rises through a constant temperature atmosphere.
  • A Its pressuren reduces but volume remains constant
  • B Te product of pressure and volume remains constant
  • C Both pressure and volume increases
  • D Its pressure remains constant but the volume decreases
  • E Both pressure and volume remains constant
View Answer & Explanation
Question 24:
Change of state is accompanied by change of
  • A Temperature
  • B Volume
  • C Heat content
  • D Temperatureb and volume
  • E Volume and heat content
View Answer & Explanation
Question 25:
The tyre pressure of a car was found to be 150cmHg in the morning at a temperature of 27°C. Hard driving in the afternoon raised the temperature of the tyres by 57°C. The tyre pressure had by the afternoon was
  • A Increased by 15.0cm Hg
  • B Decreased by 15.0cm Hg
  • C Increased by 22.50cm
  • D Decreased by 22.50cm Hg
  • E Remained constant
View Answer & Explanation