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A blackbody of surface area 1cm^(2) is p...

A blackbody of surface area `1cm^(2)` is placed inside an enclosure. The enclosure has a constant temperature `27^(@)C` and the blackbody is maintained at `327^(@)C` by heating it electrically. What electric power is needed to maintain the temperature? `sigma=6.0xx10^(-s)Wm^(-2)K(-2)` .

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The correct Answer is:
`0.73 W`
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