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MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

If E is emissive power and 'a' is the coefficient of absorption of a body at any temperature, is the emissive power of a perfectly black body at that temperature, then according to Kirchhoff's law

Answer: (B)

Solution

Kirchhoff's law gives ; (a) inverts the dependence on , while

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Question ID VK-063031