Question 348: Properties of Matter

Question

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 will be

Accepted Answer

Equivalent thermal conductivity of the composite rod in parallel combination will be,
$$K = {{{K_1}{A_1} + {K_2}{A_2}} \over {{A_1} + {A_2}}} = {{{K_1} + {K_2}} \over 2}$$

Answer

$${{3\left( {{K_1} + {K_2}} \right)} \over 2}$$

Answer

$${K_1} + {K_2}$$

Answer

$$2\left( {{K_1} + {K_2}} \right)$$

Answer

$${{{K_1} + {K_2}} \over 2}$$

Properties of Matter

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 will be

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