Q 1210012810.     Three rods of material `x` and three of material `y` are connected as shown in figure. All the rods are identical in length and cross-sectional area. if the end `A` is maintained at `60°C` and the junction `E` at `10°C`, calculate the temperature of the junction `B`. The thermal conductivity of `x` is `800 W//m ­
"C` and that of `y` is `400W//m -"C`.


A

`43^0 C`

B

`40^0 C`

C

`67^0 C`

D

None of these.

HINT

Thermal resistance `R = L/(KA)`

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