Formula for total emissive power of gray body? - Heat Transfer

Q.  What is the correct formula for the total emissive power of the gray body (Eg)?
- Published on 11 Aug 15

a. (Eg) = ε σ T4
b. (Eg) = ε T4
c. (Eg) = (1/ε) σ T4
d. none of the above

ANSWER: (Eg) = ε σ T4

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