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A perfectly black bloody radiates 81j/se...

A perfectly black bloody radiates 81`j/sec` at `300^@K`. The amount of energy radiated per sec by an ordinary surface of same area having emissivity od 0.8 at a temperature of `500^@K` will be

A

a)100 `j/sec`

B

b)500 `j/sec`

C

c)200 `j/sec`

D

d)`300 j/sec`

Text Solution

Verified by Experts

The correct Answer is:
B
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