Question

Define absorptivity, emissivity and hence explain Kirchhoff's law of radiation.

Answer 1

Answer:

The absorptivity and the emissivity are interconnected by the Kirchhoff's Law of thermal radiation, which states : For an arbitrary body emitting and absorbing thermal radiation in thermodynamics equilibrium, the emissivity is equal to the absorptivity. emissivity

$e = absorptivity \: \alpha$