Question

What do you mean by a perfectly black body (explain with context of the phenomenon black body radiation)

Answer 1

the body which emits and absorbs all types of radiations is called a perfectly black body.Till now there is no 100 percent black body only90 to 95 percent black body is found.

Answer 2

Black-body radiation has a characteristic, continuous frequency spectrum that depends only on the body's temperature, called the Planck spectrum or Planck's law.