An object exchanges energy only by radiation. Its absorbed power suddenly increases and then remains constant. The object warms until it reaches a new steady temperature. Compared with the original steady state, which describes the radiation it then emits?
Greater total power and a shorter peak wavelength.
Greater total power and a longer peak wavelength.
Smaller total power and a shorter peak wavelength.
Smaller total power and a longer peak wavelength.
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.