The net radiant interchange per square metre for two large parallel pl – McqOptions

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1.	The net radiant interchange per square metre for two large parallel planes at temperatures of 1000?K and 100?K respectively, would be roughly
A.	240 kcal/hr
B.	75 kcal/hr
C.	25 kcal/hr
D.	480 kcal/hr
E.	120 kcal/hr
Answer» D. 480 kcal/hr

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