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Three conducting rods of same material and cross-section are shown in figure. Temperatures of A,D an
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Three conducting rods of same material and cross-section are shown in figure. Temperatures of A,D and C are maintained at 20 ∘ C,90 ∘ C and 0 ∘ C. the ratio of lengths of BD and BC if there is no heat flow in AB is :
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