Two rods (one semi-circular and other st...

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

`2:pi`

`1:2`

`pi:2`

`3:2`

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