"The ratio of the total emissive power to the absorptivity for all bod – McqOptions

MCQOPTIONS

1.	"The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium". This is __________ law.
A.	Kirchoffs
B.	Planck's
C.	Wien's displacement
D.	Stefan-Boltzman
Answer» B. Planck's

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