A thin metal plate of 4 cm diameter is suspended in atmospheric air wh – McqOptions

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1.	A thin metal plate of 4 cm diameter is suspended in atmospheric air whose temperature is 290 K. This plate attains a temperature of 295 K when one of its face receives radiant energy from a heat source at the rate of 2 W. If heat transfer coefficient on both surfaces of the plate is stated to be 87.5 W/m 2 K, workout the energy lost by reflection
A.	0.8 W
B.	0.3 W
C.	0.9 W
D.	0.10 W
Answer» D. 0.10 W

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