O-LevelPhysicsThermal Physics5054/12 · May/June 2015 · Q201 Mark

Some gas is trapped in a closed container. The gas is cooled and the volume of the container is kept constant. What happens to the gas molecules?

AThey collide with the walls more often.

BThey contract.

CThey get closer together.

DThey move more slowly.

✓ Correct answer

D: They move more slowly.

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Topic: Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2015 Paper 1 Variant 2, question 20.

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