(d) What do you mean by a perfect black body? – InterviewSolution

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1.	(d) What do you mean by a perfect black body?
Answer» Ablackbody(sometimes spelled "black body") is a theoretically ideal radiator and absorber of energy at all electromagnetic wavelength s. The term comes from the fact that a cold blackbodyappears visuallyblack. The energy emitted by ablackbodyis calledblackbodyradiation.

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