O-LevelPhysicsThermal Physics5054/12 · Oct/Nov 2017 · Q181 Mark

A heater is designed to radiate thermal energy. Which change to the design decreases the thermal energy emitted by radiation?

Adarker coloured surface

Bhigher surface temperature

Clarger surface area

Dshinier surface

✓ Correct answer

D: shinier surface

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Topic: Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2017 Paper 1 Variant 2, question 18.

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