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[" For a black body at temperature "727^...

[" For a black body at temperature "727^(@)C" ,its rate of "],[" energy loss is "20" watt and temperature of surrounding "],[" is "227^(@)C" .If temperature of black body is changed to "],[1227^(@)C" then its rate of energy loss will be "],[(1)304W],[" (2) "320],[" (2) "(320)/(3)W],[" (3) "240W],[" (4) "120W]

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