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5.3 Black body radiation

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Question 31
H

A model planet receives radiation at a power of 500 W. It reflects 30% and absorbs the rest. It transfers energy only by radiation and has a steady temperature.

How much energy does it emit in 2.0 min?

[1]
A

18 kJ18\,\mathrm{kJ}18kJ

B

60 kJ60\,\mathrm{kJ}60kJ

C

42 kJ42\,\mathrm{kJ}42kJ

D

84 kJ84\,\mathrm{kJ}84kJ

Markscheme

5.3 Black body radiation Questions

  1. GCSE
  2. /Physics
  3. /5.3 Black body radiation

96 exam-style questions on Edexcel GCSE Physics 5.3 Black body radiation, covering 5.3.1 Emission of radiation and temperature, 5.3.2 Radiation balance and constant temperature, and 5.3.3 The temperature of the Earth. Each one has a worked solution and a mark scheme showing where the marks go.

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