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Three rods of identical area of cross-section and made from the same metal from the sides of an isosceles triangle. ABC, right angled at B. The points A and B are maintained at temperatures T and `sqrt 2T` RESPECTIVELY. In the steady state the temperature of the point C is `T_(C)`.
Assuming that only heat conduction takes place , `T_(C) / T` is equal to

A

`1/(2(sqrt2-1))`

B

`3/(sqrt2+1)`

C

`1/(sqrt3(sqrt2-1))`

D

`1/(sqrt2+1)`

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