Three metal walls of same thickness and cross sectional area have thermal conduc

Question

Three metal walls of same thickness and cross sectional area have thermal conductivities k, 2k and 3k respectively. The temperature drop across the walls (for same heat transfer) will be in the ratio

Options:

A . 3:2:1

B . 1:1:1

C . 1:2:3

D . Given data is insufficient

Answer: Option A
Answer: (a).3:2:1

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