A heat-shield tile in an evacuated test chamber exchanges energy only by radiation. It is at a steady temperature before and after the chamber settings are changed. At the second steady temperature, the peak wavelength of the radiation emitted by the tile is shorter. Compared with the first steady temperature, which describes the average powers at the second steady temperature?
Emitted power is greater, but absorbed power is unchanged.
Both absorbed power and emitted power are smaller.
Absorbed power is greater, but emitted power is unchanged.
Both absorbed power and emitted power are greater.
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.