Question

Define emissive power and absorptive power. State Kirchhoff's law of radiation and give its theoretical proof.​

Answer 1

Answer:

At a given temperature, the ratio of the emissive power of a body to its absorptive power is constant and is equal to the emissive power of a black body at the same temperature. aE=Eb. But EbE=e. ∴a=e

Explanation:

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