The emissivity and the absorptivity of a real surface are equal for radiation wi

Question

The emissivity and the absorptivity of a real surface are equal for radiation with identical temperature and wavelength. This law is referred to as

Options:

A . Kirchhoff’s law

B . Lambert’s law

C . Planck’s law

D . Wein’s displacement law

Answer: Option A
Answer: (a).Kirchhoff’s law

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