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Two rods A and B of different materials are welded together as shown in figure. Their thermal conductivities are $K_{1} a n d K_{2}$ .

The thermal conductivity of the composite rod will be

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3K1+K22

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detailed solution

Correct option is D

Equivalent thermal conductivity of the composite rod in parallel combination will be,K=K1A1+K2A2A1+A2=K1+K22

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Two rods A and B of different materials are welded together as shown in figure. Their thermal conductivities are K1 and K2. The thermal conductivity of the composite rod will be

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Ready to Test Your Skills?

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Two rods A and B of different materials are welded together as shown in figure. Their thermal conductivities are $K_{1} a n d K_{2}$ .

The thermal conductivity of the composite rod will be