Question

what is black body ?​

Answer 1

Answer:

Blackbody, in physics, a surface that absorbs all radiant energy falling on it. The term arises because incident visible light will be absorbed rather than reflected, and therefore the surface will appear black. The concept of such a perfect absorber of energy is extremely useful in the study of radiation phenomena.

Answer 2

⭐ $\sf\underline\green{ Black \: \: body }$ :- The ideal body, which emits and absorbs all frequencies of radiation is called a black body.