Which of the following is closest to a black | vedclass

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(C) black body is an idealized physical body that absorbs all incident electromagnetic radiation,regardless of frequency or angle of incidence.$1$. $A

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Black holes

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(C) black body is an idealized physical body that absorbs all incident electromagnetic radiation,regardless of frequency or angle of incidence.$1$. $A$ black body has an absorptivity of $1$ and a reflectivity of $0$.$2$. It has zero transmittance.$3$. Among the given options,a black hole is the most perfect approximation of a black body because it absorbs all radiation (including light) that falls within its event horizon,reflecting nothing back.$4$. While black paint is a good absorber,it still reflects a small fraction of light,making black holes the closest physical realization of an ideal black body.

Which of the following is closest to a black body?

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