Heat TransferHard
Question
The temperature of the two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity K and 2K and thickness x and 4x respectively are T2 and T1(T2 > T1). The rate of heat transfer throgh the slab, in a steady state is 
f, with f equal to : -
f, with f equal to : - Options
A.1
B.1/2
C.2/3
D.1/3
Solution
Let temp. of interface be Tthen
⇒ f =
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