Two identical plates, one matt black and one shiny, receive infrared radiation from a lamp. Equal masses of water behind the plates start at the same temperature. The black plate gives a greater temperature rise. Which further result would best show that surface finish, rather than position, caused the difference?
The greater rise stays on the left when the plates exchange positions.
The greater rise stays on the right when the plates exchange positions.
The greater rise follows the shiny plate when the plates exchange positions.
The greater rise follows the black plate when the plates exchange positions.
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.