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A spherical body of area A and emissivit...

A spherical body of area A and emissivity `e=0.6` is kept inside a perfectly black body. Total heat radiated by the body at temperature T

A

(a)`0.60sigmaAT^(4)`

B

(b)`0.80sigmaAT^(4)`

C

(c)`1.00sigmaAT^(4)`

D

(d)`0.40sigmaAT^(4)`

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ALLEN -GEOMETRICAL OPTICS-EXERCISE - 05 (B)
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