A hollow sphere coated inside with platinum Black and has a small hole in it nearly acts as a black
body because
a) It emits only certain frequencies of radiation
b) It absorbs only certain frequencies of radiation
c) It emits all frequencies but absorbs only certain frequencies of radiation
d) It emits and absorbs all frequencies of radiation
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Answer:
d.) it emits and absorbs all frequencies of radiation
Explanation:
A black body with pt-black which has small hole in it acts as a perfect absorber and emitter.
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