NEET | 2017Basic Maths and Units and DimensionsEasy

Question

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 :-
 

Options

A.

3(K1+K2)2

B.

K1 + K2

C.

2 (K1 + K2)

D.

K1+K22

Solution

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