In thermal radiation for a black body (where, ε is emissivity and α – McqOptions

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1.	In thermal radiation for a black body (where, ε is emissivity and α is absorptivity)
A.	α = 1; ε ≠ 1
B.	α ≠ 1, ε = 1
C.	α ≠ 1, ε ≠ 1
D.	α = 1; ε = 1
Answer» E.

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