Walls of a cubical oven are of thickness l, and they are made of mater – McqOptions

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1.	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 coefficient 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» D. 48.25

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