A car is left in bright sunshine. The car gets hotter for a while and then stays at a steady temperature. The temperature becomes steady because
the car begins to emit radiation only once it is hot enough.
the car emits radiation at the same rate as it absorbs radiation.
the car stops absorbing radiation once it reaches that temperature.
the car reflects all of the radiation that falls on it at that temperature.
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.