A thin shield of emissivity E3 on both sides is placed between two infinite para

Question

A thin shield of emissivity E3 on both sides is placed between two infinite parallel plates of emissivities E1 and E2 and temperatures T1 and T2. If E1 = E2 = E3, then the fraction radiant energy transfer without shield takes the value

Options:

A . 0.25

B . 0.50

C . 0.75

D . 1.25

Answer: Option B
Answer: (b).0.50

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