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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Charles' law

Jamb Physics Questions - Charles' law

Question 1:
An air bubble rises from the bottom to the top of a water dam which is 40m deep. The volume of the bubble just below the surface is 2.5cm3. Find its volume at the bottom of the dam, if atmospheric pressure is equivalent to 10m water
  • A 0.0cm<sup style='font-size: smaller;'>3</sup>
  • B 2.0cm<sup style='font-size: smaller;'>3</sup>
  • C 1.6cm<sup style='font-size: smaller;'>3</sup>
  • D 0.625cm<sup style='font-size: smaller;'>3</sup>
  • E 0.5cm<sup style='font-size: smaller;'>3</sup>
View Answer & Explanation
Question 2:
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 3:
From the kinetic theory of gases, temperature is a
  • A Form of energy and is proportional to the total kinetic energy of the molecules
  • B Form of energy and is proportional to the average kinetic energy of the molecules
  • C Physical property and is proportional to the total kinetic energy of the molecules
  • D Physical property and is proportional to the average kinetic energy of the molecules
View Answer & Explanation
Question 4:
A Motor Tyre is inflated to pressure of 2.0 x 105Nm-2 when the temperature of air is 27oC. What will be the pressure in it at 87oC assuming that the volume of the Tyre does not change?
  • A 2.6 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • B 2.4 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • C 2.2 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • D 1.3 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
View Answer & Explanation
Question 5:
The volume of an air bubble increases from the bottom to the top of a lake at constant temperature because
  • A Atmospheric pressure acts on the surface of the lake
  • B Pressure increases with depth
  • C Density remains constant with pressure
  • D The bubble experiences an upthrust
View Answer & Explanation