Engineering :: Heat Transfer

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The rate of radiant energy, which is emitted by a surface at any temperature and in small wavelength is found from the known rate of energy, which under the same condition would be emitted from a black surface by multiplying with the absorptivity. Above enunciation is known as

[A].	Planck's law	[B].	Kirchhoff's law
[C].	Stefan Boltzman law	[D].	Lambert rule
[E].	None of the above

Answer: Option E

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