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O-LevelPhysicsThermal Physics5054/12 · May/June 2015 · Q151 Mark

An electrical heater is placed in a beaker of cold oil, as shown. The heater is switched on. What happens to the liquid at X?

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AIt becomes less dense and falls.
BIt becomes less dense and rises.
CIt becomes more dense and falls.
DIt becomes more dense and rises.

✓ Correct answer

B: It becomes less dense and rises.

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About this question

Topic
Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source
O-Level Physics, May/June 2015 Paper 1 Variant 2, question 15.

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