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Three rods of same dimensions are arranged as shown in figure they have thermal conductivities Kı,K, and k, The points P and Q are maintained at differenttemperatures for the heat to flow at the same rate along PRQ and PQ then whichof the following option is correctKi1) K3 = -(K, +K) 2) K = K, + K,3) K3 = Ki+k;4) Kz = 2(K, + K,)Ans :3 |
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