A perfectly black bloody radiates 81j/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 perfectly black bloody radiates 81j/sec at 300^@K. The amount of ene

1.	A perfectly black bloody radiates 81j/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
Answer» a)100 `j/sec` b)500 `j/sec` c)200 `j/sec` d)`300 j/sec` ANSWER :B

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A perfectly black bloody radiates 81j/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

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