O-LevelPhysicsThermal Physics5054/11 · May/June 2022 · Q161 Mark

A liquid-in-glass thermometer consists of a bulb containing a liquid which expands into a thin capillary tube. The liquid in the thermometer is replaced by the same volume of a different liquid that expands more for the same temperature rise. The length of the capillary tube remains the same. How does the new thermometer compare with the old thermometer?

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AIt has greater sensitivity and a greater range.

BIt has greater sensitivity but a smaller range.

CIt has the same sensitivity and the same range.

DIt has the same sensitivity but a greater range.

✓ Correct answer

B: It has greater sensitivity but a smaller range.

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Topic: Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2022 Paper 1 Variant 1, question 16.

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