A composite wall of a furnace has two layers of equal thickness having thermal conductivities in the ratio 2:3. What is the ratio of the temperature drop across the two layers?

A composite wall of a furnace has two layers of equal thickness havin

1.	A composite wall of a furnace has two layers of equal thickness having thermal conductivities in the ratio 2:3. What is the ratio of the temperature drop across the two layers?
A.	2:3
B.	3:2
C.	1:2
D.	log e 2 : log e 3
Answer» C. 1:2

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A composite wall of a furnace has two layers of equal thickness having thermal conductivities in the ratio 2:3. What is the ratio of the temperature drop across the two layers?

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