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  4. Two different metal slabs of identical length are joined in parallel. Their cross-sectional areas are A and 2A. If their thermal conductivity coefficients are K1 and K2 as shown then their equivalent conductivity for one dimensional steady heat transfer is

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Q. Two different metal slabs of identical length are joined in parallel. Their cross-sectional areas are $A$ and $2A$. If their thermal conductivity coefficients are $K_1$ and $K_2$ as shown then their equivalent conductivity for one dimensional steady heat transfer isPhysics Question Image

Solution:

$K_{eq} = \frac {K_1A_1+K_2A_2}{A_1+A_2}$