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A metal ball of surface area 200 cm^(2)...

A metal ball of surface area `200 cm^(2)` and temperature `527^(@)C` is surrounded by a vessel at `27^(@)C` . If the emissivity of the metal is 0.4, then the rate of loss of heat from the ball is `(sigma = 5.67 xx10^(-8)J//m^(2)-s-k^(4))`

A

108 joules approx.

B

168 joules approx.

C

182 joules approx.

D

192 joules approx.

Text Solution

Verified by Experts

The correct Answer is:
C
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ERRORLESS -TRANSMISSION OF HEAT-Radiation (Stefan s law)
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