Emissivity of a white polished body in comparison to a black body is
A. Higher
B. Lower
C. Same
D. Depends upon the shape of body
Answer: Option B
Solution (By Examveda Team)
White body reflects all incident radiation;i.e., its absorptivity is zero.
Accordingly, its emissivity is also zero.
So any black or even "grey" body will have a higher emissivity,
This Question Belongs to Mechanical Engineering >> Heat And Mass Transfer
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