The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as
A. Wien's law
B. Stefan's law
C. Kirchhoff's law
D. Planck's law
Answer: Option C
Solution (By Examveda Team)
Kirchhoff's law states that the emissivity and the absorptivity of a surface at a given temperature and wavelength are equal.The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as Kirchhoff's law
This Question Belongs to Mechanical Engineering >> Heat And Mass Transfer
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