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Sheetal Wagle
Asked: 2022-11-07T22:48:22+05:30 In:

Two rods one is semi circular of thermal conductivity `K_(1)` and otheir is straight of thermal conductivity `K_(2)` and of same cross sectional area are joined as shown in the The points `A` and `B` are maintained at same temperature difference. If rate of flow of heat is same in two rods then `K_(1)//K_(2)` is
image .
A. `2:pi`
B. `1:2`
C. `pi:2`
D. `3:2`

Two rods one is semi circular of thermal conductivity `K_(1)` and otheir is straight of thermal conductivity `K_(2)` and of same cross sectional area are joined as shown in the The points `A` and `B` are maintained at same temperature difference. If rate of flow of heat is same in two rods then `K_(1)//K_(2)` is
image .
A. `2:pi`
B. `1:2`
C. `pi:2`
D. `3:2`
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  1. Correct Answer – C
    `((Q)/(t))_(“semicircularrod”)=((Q)/(t))_(“straightrod”)`
    `(K_(1)A(Deltatheta))/(pir)=(K_(2)A(Deltatheta))/(2r)`
    r =` radius of semi circle .

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