While the total emissivity of a perfect black body is unity, the same for a real body is

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Mr. Dubey

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Q. While the total emissivity of a perfect black body is unity, the same for a real body is

(A) 0
(B) 1
(C) > 1
(D) Between 0 and 1

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✅ Correct Answer: (D) Between 0 and 1

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