In radiative heat transfer, a grey surface is the one, which has

1.	In radiative heat transfer, a grey surface is the one, which has
A.	emissivity independent of wavelength.
B.	grey appearance to the eye.
C.	zero reflectivity.
D.	equal brightness in all directions.
Answer» B. grey appearance to the eye.

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In radiative heat transfer, a grey surface is the one, which has

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