The energy emitted per second by a black body at `27^(@)C` is 10 J. If the temperature of the black body is increased to `327^(@)C` , the energy emitt
The energy emitted per second by a black body at `27^(@)C` is 10 J. If the temperature of the black body is increased to `327^(@)C` , the energy emitted per second will be
A. 20 J
B. 40 J
C. 80 J
D. 160 J
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Correct Answer - D
Efficiency ,`E_(2)=E_(1)(T_(2)/(T_(1)))^(4)=10((327+273)/(27+273))^(4)=160 J`
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