''A perfect black body is black in colour.'' | vedclass

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Question

(B) The statement is false. $A$ perfect black body is defined as an object that absorbs all incident electromagnetic radiation,regardless of frequency

Vedclass · Accepted Answer

False

Vedclass · Answer

(B) The statement is false. $A$ perfect black body is defined as an object that absorbs all incident electromagnetic radiation,regardless of frequency or angle of incidence. While it appears black at room temperature because it does not reflect any light,a perfect black body at a high temperature will emit radiation across all wavelengths,making it glow (e.g.,a star or a heated metal object). Therefore,its appearance depends on its temperature,not just its ability to absorb light.

''$A$ perfect black body is black in colour.'' Is this statement true or false?

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