Question 372: Properties of Matter

Question

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

Accepted Answer

In series, equivalent thermal conductivity
$${K_{eq}} = {{2{K_1}{K_2}} \over {{K_1} + {K_2}}}$$
$$ \Rightarrow {K_{eq}} = {{2 	imes K 	imes 2K} \over {K + 2K}} = {4 \over 3}K$$

Answer

$${2 \over 3}K$$

Answer

$$\sqrt 2 K$$

Answer

3 K

Answer

$${4 \over 3}K$$

Properties of Matter

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

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