Heat and Thermal ExpansionHard
Question
The temperature of the two outer surface of a composites 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 through the slab state is 
f, with f equals to :-
f, with f equals to :-Options
A.1
B.1 / 2
C.2 / 3
D.1 / 3
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