Hot surface at temperature 400 K having an emissivity of 0.5 dissipate – McqOptions

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1.	Hot surface at temperature 400 K having an emissivity of 0.5 dissipates heat by radiation into a surrounding of 375 K. Its radiation heat transfer coefficient (W/sqm K) is
A.	14.6
B.	6.6
C.	1.83
D.	9.4
Answer» C. 1.83

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