_Which of the following statement is correct?$?

1.	_Which of the following statement is correct?$?
A.	A grey body is one which absorbs all radiations incident on it.
B.	At thermal equilibrium, the emissivity and absorptivity are same.
C.	The energy absorbed by a body to the total energy falling on it, is called emissivity.
D.	A perfect body is one which is black in colour.
Answer» C. The energy absorbed by a body to the total energy falling on it, is called emissivity.

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_Which of the following statement is correct?$?

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