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5.3 Black body radiation

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Question 30
H

A body absorbs radiation at an average power of 75 W and emits radiation at an average power of 95 W for 3.0 min. No other energy transfers occur.

What is the change in its internal energy?

[1]
A

an increase of 3.6 kJ3.6\,\mathrm{kJ}3.6kJ

B

a decrease of 3.6 kJ3.6\,\mathrm{kJ}3.6kJ

C

an increase of 30.6 kJ30.6\,\mathrm{kJ}30.6kJ

D

a decrease of 30.6 kJ30.6\,\mathrm{kJ}30.6kJ

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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