A metal plate has been in a room for several hours. The plate and the room are both at 20 ∘C20\ ^\circ\text{C}20 ∘C. Which statement about the plate is correct?
The plate emits infrared radiation but does not absorb any.
The plate neither emits nor absorbs infrared radiation.
The plate emits infrared radiation and absorbs infrared radiation.
The plate absorbs infrared radiation but does not emit any.
40 exam-style questions on AQA GCSE Physics 6.3 Black body radiation, covering 6.3.1 Emission and absorption of infrared radiation and 6.3.2 Perfect black bodies and radiation. Each one has a worked solution and a mark scheme showing where the marks go.