Two rods (one$$ $$semi-circular$$ and other $$straight) of same material and of same $$cross-sectional$$ area are joined as shown in fig. The point A and B are maintained at different temperatures. The ratio of the heat transferred through a $$cross-section$$ of a semicircular rod to the heat transferred through a $$cross-section$$ of the straight rod in a given time is

Question

Infinity Learn · Accepted Answer

We know that $$dQdt=KAT1$$−$$T2d$$∴     dQdt∝$$1dSo$$,   $$(dQ/dt)1(dQ/dt)2=1($$π$$r/2r)=2r$$$$π$$$$r=2$$π

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