A glass bottle is taken from a refrigerator. The bottle is colder than the room.
State whether the bottle emits infrared radiation while it is still cold.
The bottle is left in the room and becomes warmer.
State when the bottle emits more infrared radiation each second: when first removed from the refrigerator or after it has become warmer.
An ideal object absorbs all of the radiation incident on it.
Give the physics term for this ideal object.
106 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.