O-LevelPhysicsThermal Physics5054/11 · Oct/Nov 2017 · Q111 Mark

A gas is heated in a closed container of constant volume. What happens to the molecules of the gas?

AThey collide with the walls with less force.

BThey expand.

CThey move faster.

DThey move further apart.

✓ Correct answer

C: They move faster.

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Topic: Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2017 Paper 1 Variant 1, question 11.

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