Question

What is black body ?

explain

Answer 1

A blackbody (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 blackbody appears visually black. The energy emitted by a blackbody is called blackbody radiation.

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Answer 2

Answer:

A black body is a metal sphere coated with platinum - black and a hole on its surface.

A perfect black - body emits and absorbs all radiations .

However a perfect black - body does not exist .

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