Relation between emissive power of a real body (E) & black body (Eb) - Heat Transfer

Q.  What is the relation between emissive power of a real body (E) and emissive power of black body (Eb) when both are at same temperature?
Where,
α =absorptivity
- Published on 11 Aug 15

a. Eb / E = 1
b. Eb / E = α
c. E / Eb = 1
d. E / Eb = α

ANSWER: E / Eb = α

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