146594 Consider a compound slab consisting of two different materials having equal thickneses and thermal conductivities $K$ and $2 K$, respectively. The equivalent thermal conductivity of the slab is

146595 The two ends of a rod of length $L$ and a uniform cross-sectional area $A$ are kept at two temperatures $T_{1}$ and $T_{2}\left(T_{1}>T_{2}\right)$. The rate of heat transfer ' $\frac{\mathrm{dQ}}{\mathrm{dt}}$ ' through the rod in a steady state is given by

146596 Two rods $A$ and $B$ of different materials are welded together as shown in figure. Their thermal conductivities are $K_{1}$ and $K_{2}$. The thermal conductivity of the composite rod will be

146597 The coefficients of linear expansions of brass and steel are $\alpha_{1}$ and $\alpha_{2}$ respectively. When we take a brass rod of length $l_{1}$ and a steel rod of length $l_{2}$ at $0^{\circ} \mathrm{C}$, then the difference in their lengths $\left(l_{2}-l_{1}\right)$ will remain the same at all temperatures, if

146594 Consider a compound slab consisting of two different materials having equal thickneses and thermal conductivities $K$ and $2 K$, respectively. The equivalent thermal conductivity of the slab is

146595 The two ends of a rod of length $L$ and a uniform cross-sectional area $A$ are kept at two temperatures $T_{1}$ and $T_{2}\left(T_{1}>T_{2}\right)$. The rate of heat transfer ' $\frac{\mathrm{dQ}}{\mathrm{dt}}$ ' through the rod in a steady state is given by

146596 Two rods $A$ and $B$ of different materials are welded together as shown in figure. Their thermal conductivities are $K_{1}$ and $K_{2}$. The thermal conductivity of the composite rod will be

146597 The coefficients of linear expansions of brass and steel are $\alpha_{1}$ and $\alpha_{2}$ respectively. When we take a brass rod of length $l_{1}$ and a steel rod of length $l_{2}$ at $0^{\circ} \mathrm{C}$, then the difference in their lengths $\left(l_{2}-l_{1}\right)$ will remain the same at all temperatures, if

146594 Consider a compound slab consisting of two different materials having equal thickneses and thermal conductivities $K$ and $2 K$, respectively. The equivalent thermal conductivity of the slab is

146595 The two ends of a rod of length $L$ and a uniform cross-sectional area $A$ are kept at two temperatures $T_{1}$ and $T_{2}\left(T_{1}>T_{2}\right)$. The rate of heat transfer ' $\frac{\mathrm{dQ}}{\mathrm{dt}}$ ' through the rod in a steady state is given by

146596 Two rods $A$ and $B$ of different materials are welded together as shown in figure. Their thermal conductivities are $K_{1}$ and $K_{2}$. The thermal conductivity of the composite rod will be

146597 The coefficients of linear expansions of brass and steel are $\alpha_{1}$ and $\alpha_{2}$ respectively. When we take a brass rod of length $l_{1}$ and a steel rod of length $l_{2}$ at $0^{\circ} \mathrm{C}$, then the difference in their lengths $\left(l_{2}-l_{1}\right)$ will remain the same at all temperatures, if

146594 Consider a compound slab consisting of two different materials having equal thickneses and thermal conductivities $K$ and $2 K$, respectively. The equivalent thermal conductivity of the slab is

146595 The two ends of a rod of length $L$ and a uniform cross-sectional area $A$ are kept at two temperatures $T_{1}$ and $T_{2}\left(T_{1}>T_{2}\right)$. The rate of heat transfer ' $\frac{\mathrm{dQ}}{\mathrm{dt}}$ ' through the rod in a steady state is given by

146596 Two rods $A$ and $B$ of different materials are welded together as shown in figure. Their thermal conductivities are $K_{1}$ and $K_{2}$. The thermal conductivity of the composite rod will be

146597 The coefficients of linear expansions of brass and steel are $\alpha_{1}$ and $\alpha_{2}$ respectively. When we take a brass rod of length $l_{1}$ and a steel rod of length $l_{2}$ at $0^{\circ} \mathrm{C}$, then the difference in their lengths $\left(l_{2}-l_{1}\right)$ will remain the same at all temperatures, if