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2.3.3a Thermal radiation

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Question 5
a.

Explain why the absorber pipes in a solar water heater are painted matt black. Use ideas about the transfer of thermal energy in your answer.

[3]
b.

As a hot metal block is removed from a furnace and allowed to cool, its temperature decreases. State what happens to the rate of emission of thermal radiation from the block.

[1]
Markscheme

2.3.3a Thermal radiation Questions

  1. IGCSE
  2. /Physics
  3. /2.3.3a Thermal radiation

99 exam-style questions on CIE IGCSE Physics 2.3.3a Thermal radiation. Each one has a worked solution and a mark scheme showing where the marks go.

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