O-LevelPhysicsThermal Physics5054/12 · Oct/Nov 2021 · Q141 Mark

The diagram shows the inside of a refrigerator. When the refrigerator is first switched on, what happens to the air near the cooling unit?

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Athe molecules of this air become smaller and the density of this air decreases

Bthe molecules of this air become smaller and the density of this air increases

Cthe molecules of this air move closer together and the density of this air decreases

Dthe molecules of this air move closer together and the density of this air increases

✓ Correct answer

D: the molecules of this air move closer together and the density of this air increases

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Topic: Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2021 Paper 1 Variant 2, question 14.

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