Thermal Equilibrium Interface Temperature

Two cylindrical rods A and B made of different materials, are joined in a straight line. The ratio of lengths, radii and thermal conductivities of these rods are :
$\frac{{{L_A}}}{{{L_B}}} = \frac{1}{2},\frac{{{r_A}}}{{{r_B}}} = 2$ and $\frac{{{K_A}}}{{{K_B}}} = \frac{1}{2}.$ The free ends of rods A and B are maintained at 400 K, 200 K, respectively. The temperature of rods interface is ________ K, when equilibrium is established.

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Thermal Conduction

Medium

Thermal Equilibrium Interface Temperature

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