Questions
A black body at 227°C radiate heat at the rate of 7 cal/cm2s. At a temperature 727°C, the rate of heat radiated in the same unit will be :
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Correct option is D
E∞T4⇒7E2=50010004⇒E2=7×16=112.Similar Questions
For a black body at temperature 727°C, its radiating power is 60W and temperature of surrounding is 227° C. If temperature of black body is changed to 1227°C, then its
radiating power will be :
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