A black body at 227 0 C radiates heat at the rate of 7 cals/cm 2 -s. At a temp. of 727 0 C, the rate of heat radiated in same units will be
Text Solution
Verified by ExpertsThe correct answer is:
D
Rate of heat radiated at 
Let rate of heat radiated at 
By Stefan's law, 
and 
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