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Conduction Law

A black body ...

Question

A black body is at $(727)^{0} C$ . It emits energy at a rate which is proportional to:

A

(727)^{4}

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B

(727)^{2}

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C

(1000)^{4}

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D

(1000)^{2}

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Solution

The correct option is A $(1000)^{4}$
$E = σ T^{4} ∴ E \infty (727 + 273)^{4} \Rightarrow E \infty {(1000)}^{4}$

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