Question

What is a perfectly black body? Show how it can be realised experimentally.

Answer 1

Answer:

a theoretical object that absorbs all radiation incident on it and a body which emits the greatest amount of energy at a given temperature.

Answer 2

Answer:

• We know that all bodies reflect some amount of light from them which gives them the colour.
• They appear in but only a body that absorbs all the light coming on it will have no colour or black colour in it and search body is called a black body.
• Experimentally we can say the body that is talked about is acting as a sink of energy  that comes out of source or that takes in all the light that is falling on it without any kind of reflection taking place.