AIEEE 2004 Physics Solved Paper

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 through the slab, in a steady state is (‌

A(T2−T1)K

x

)f, with f equal to