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Average and Instaneous Power

At a given te...

Question

At a given temperature, the ratio between emissive power and absorptive power is same for all bodies and is equal to the emissive power of black body. This statement is called

A

Newtons Law

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B

Plancks law

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C

Kirchoffs law

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D

Weins law

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Solution

The correct option is B Kirchoffs law
According to Kirchoff's law : At a given temperature, the ratio between emissive power and absorptive power is same for all bodies and is equal to the emissive power of black body.
This directly implies that good emitters are also good absorbers.

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