Question

Sun’s radiation is similar to that of a Blackbody.....true or false

Answer 1

A perfect black body means the body which absorbs all the electromagnetic radiation strike on it . In figure it is shown that how a perfect black body absorb a day of light inside it . A black body in thermal equilibrium emits the radiation at same temperature named as black body radiation
So, you can say that , A perfect black body is that body which absorbs and emits the all the electromagnetic radiations at the same temperature
But in case of sun , sun emits the black body radiation from different layer at different temperature .

In simple way you can say that sun is not a perfect black body . Yeah, you can assume it {just approximation }.