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Physics Chemistry

Engineering :: Heat Transfer

  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]. 25 kcal/hr[B]. 75 kcal/hr
[C]. 120 kcal/hr[D]. 240 kcal/hr
[E]. 480 kcal/hr    

Answer: Option A
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