Question

deduce Kirchhoff's law of radiation​

Answer 1

Answer:

Gustav Robert Kirchhoff (1824–1887) stated in 1860 that “at thermal equilibrium, the power radiated by an object must be equal to the power absorbed.” This leads to the observation that if an object absorbs 100 percent of the radiation incident upon it, it must reradiate 100 percent.

Explanation:

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Answer 2

Answer:

Kirchhoff's law of radiation : At a given temperature the coefficient of absorption of a body is equal to its coefficient of emission. Theoretical proof : Consider the following thought experiment. An ordinary body A and a perfectly black body B are enclosed in an athermanous enclosure as shown in figure.