Physics

Problem

A heat source at

T = 10^3 \text{ K}

is connected to another heat reservoir at

T = 10^2 \text{ K}

by a copper slab which is 1 m thick. Given that the thermal conductivity of copper is

0.1 \text{ WK}^{-1} \text{ m}^{-1}

, the energy flux through it in the steady state is: a.

90 \text{ Wm}^{-2}

120 \text{ Wm}^{-2}

65 \text{ Wm}^{-2}

200 \text{ Wm}^{-2}