Physics - Heat & Thermo Question with Solution | TestHub

A composite slab consists of two slabs $A$ and $B$ of different materials but of the same thickness placed one on top of the other (Figure 4.35). The thermal conductivities of $A$ and $B$ are $k_1$ and $k_2$ respectively. A steady temperature difference of $12^{\circ }$C is maintained across the composite slab. If $k_1=\frac{k_2}{2}$, the temperature difference across slab $A$ will be: