O-LevelPhysicsThermal Physics5054/12 · Oct/Nov 2021 · Q161 Mark

Which temperatures are used as the lower and upper fixed points for a mercury-in-glass thermometer?

Alower fixed point: freezing point of mercury, upper fixed point: boiling point of mercury

Blower fixed point: freezing point of water, upper fixed point: boiling point of water

Clower fixed point: room temperature, upper fixed point: boiling point of mercury

Dlower fixed point: room temperature, upper fixed point: boiling point of water

✓ Correct answer

B: lower fixed point: freezing point of water, upper fixed point: boiling point of water

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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 16.

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