A black body at a temperature of `227^(@)C` radiates heat energy at the rate of 5 cal/`cm^(2)`-sec. At a temperature of `727^(@)C`, the rate of heat radiated per unit area in cal/`cm^(2)`-sec will beA. 40B. 80C. 160D. 240

A black body at a temperature of `227^(@)C` radiates heat energy at th

1.	A black body at a temperature of `227^(@)C` radiates heat energy at the rate of 5 cal/`cm^(2)`-sec. At a temperature of `727^(@)C`, the rate of heat radiated per unit area in cal/`cm^(2)`-sec will beA. 40B. 80C. 160D. 240
Answer» Correct Answer - B `(E_(2))/(E_(1))=((T_(2))/(T_(1)))^(4)=((10000)/(500))^(4)=24=16` `E_(2)=16xx5=80`

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A black body at a temperature of `227^(@)C` radiates heat energy at the rate of 5 cal/`cm^(2)`-sec. At a temperature of `727^(@)C`, the rate of heat radiated per unit area in cal/`cm^(2)`-sec will beA. 40B. 80C. 160D. 240

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