O-LevelPhysicsThermal Physics5054/12 · May/June 2020 · Q261 Mark

What always happens when the temperature increases?

Agas at constant pressure expands.

Bmetal rod becomes longer, but its volume remains constant.

Cliquid contracts and then expands.

DThe hole in the centre of a metal disc becomes smaller.

✓ Correct answer

A: gas at constant pressure expands.

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Topic: Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2020 Paper 1 Variant 2, question 26.

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