The thermal radiation emitted by a body is proportional to , where is its absolute temperature. The value of '' is exactly 4 for

The thermal radiation emitted by a body is proportional to , where is

1.	The thermal radiation emitted by a body is proportional to , where is its absolute temperature. The value of '' is exactly 4 for
A.	black painted bodies only
B.	all bodies
C.	polished bodies only
D.	a black body
Answer» C. polished bodies only

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The thermal radiation emitted by a body is proportional to , where is its absolute temperature. The value of '' is exactly 4 for

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