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Emissivity of a white polished body in comparison to a black...

This question belongs to Mechanical Engineering Heat And Mass Transfer
Heat and Mass Transfer
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Emissivity of a white polished body in comparison to a black body is

Answer & Solution
Correct Answer: Option B
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,
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