A composite rod is made by joining two rods of ifferent materials and of same cross section If 12 are their initial lengths at t

Question

A composite rod is made by joining two rods of ifferent materials and of same cross section If 12 are their initial lengths at t C then a the increase in length of composite rod at 12 C A1 4 1 1 12 41 given by The effective coefficient of linear expansion of

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