A black body is at a temperature $300 K$ . It emits energy at a rate, which is proportional to
AIIMS 2002, Easy
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(d) Temperature of a black body $\mathrm{T}=300 \mathrm{K} .$ Stefan's law of radiation states that rate of energy emitted per unit area by the black body
$E \propto T^{4} \propto(300)^{4}$
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