M

Mr. Dubey • 52.30K Points
Coach 

Q. Pick out the wrong statement.

(A) The emissivity of a surface decreases, if it gets corroded by atmospheric environment
(B) The emissivity of a surface increases with increase in surface roughness
(C) The emissivity of a polished surface is quite low
(D) The emissivity of a non-metallic surface decreases with increase in the temperature
Correct : Option (A)

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