The radiant heat transfer from a plate of 2.5 cm² area at 1250 K to a very

Question

The radiant heat transfer from a plate of 2.5 cm² area at 1250 K to a very cold enclosure is 5.0 W. Determine the emissivity of the plate at this temperature

Options:

A . 0.444

B . 0.344

C . 0.244

D . 0.144

Answer: Option D
Answer: (d).0.144

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