A wooden wall panel is thick and has an area of

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A wooden wall panel is

2.0\,\text{cm}

thick and has an area of

3.0\,\text{m}^2

. The temperature on one side of the panel is

25^{\circ}\text{C}

and on the other side it is

5.0^{\circ}\text{C}

. If the wood’s thermal conductivity is

0.80\,\text{W}\,\text{m}^{-1}\,\text{K}^{-1}

, what is the approximate rate at which thermal energy is conducted through the panel? (a)

800\,\text{W}

(b)

2.4\times10^{3}\,\text{W}

(c)

24\,\text{W}

(d)

240\,\text{W}