A black body is at a temperature 300 K . It emits energy at a rate, which is proportional to

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A black body is at a temperature $300 \mathrm{~K}$. It emits energy at a rate, which is proportional to

PhysicsThermal Properties of MatterAIIMSAIIMS 2002

Options:

A 300
B $(300)^3$
C $(300)^2$
D $(300)^4$.

Solution:

2784 Upvotes Verified Answer

The correct answer is: $(300)^4$.

Temperature of a black body $(T)=300 \mathrm{~K}$. Stefan's law of radiation states that energy emitted by the black body $(E) \propto T^4 \propto(300)^4$.

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