A black body _ black body radiation.
Correct answer: C. Both emits and absorbs
- A. Emits
- B. None of these
- C. Both emits and absorbs
- D. Absorbs
Explanation
A black body is a perfect absorber that absorbs all kinds of radiation. However, when it is heated, it becomes a very effective emitter of radiation called black body radiation. The absolute temperature of the black body and the wavelength of the radiation emitted are indirectly proportional to each other according to Wien's law which stipulates:
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