The rate of emission of radiation of a black body at 273∘C is E, then the rate of emission of radiation of this body at 0∘C will be
A
E16
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B
E4
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C
E8
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D
0
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Solution
The correct option is AE16 From Stefan Boltzmann law power radiated at temperature T is ET=eAT4 When T=273∘C E273=eA(273+273)4=E (given) When T=0∘C E0=eA(273+0)4 E0E=(273546)4=116 E0=E16