Walls of a cubical oven are of thickness l, and they are made of material of thermal conductivity k. The temperature inside the oven is 100°C and the inside heat transfer co-efficient is 3k/l. If the wall temperature on the outside is held at 25°C, what is the inside wall temperature in degree centigrade?
A. 35.5
B. 43.75
C. 81.25
D. 48.25
Answer: Option C
This Question Belongs to Chemical Engineering >> Heat Transfer
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