Teaching RPSC School Lecturer Mock Test Series 2024 Physics Thermal Properties of Matter Heat transfer
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 \( \left(\frac{\mathrm{A}\left(\mathrm{T}_2-\mathrm{T}_1\right) \mathrm{K}}{x}\right) f \), with f equal to
1
1
2
\( \frac{1}{2} \)
3
\( \frac{2}{3} \)
4
\( \frac{1}{3} \)
5
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