Two objects are at the same temperature and one of them is a perfect black body. Which statement is correct?
No object at that temperature emits radiation faster than the perfect black body.
No object at that temperature emits radiation more slowly than the black body.
A perfect black body emits radiation at every wavelength except visible ones.
A perfect black body emits radiation only at its peak emission wavelength.
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.