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Three rods of copper, brass and steel are joined together to form T shape as shown in figure. The cross sectional area of each rod is `4cm^(2)` the end of copper rod is maintained at `10^(@)C` and the ends of brass and steel rods at `0^(@)C` assume there is no loss of heat to surrounding. What is temperature of junction point A in `.^(@)C`

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`i=i_(i)+i_(2)`
`=(0.96xx4xx(10-theta))/(48)=(0.28xx4(theta-0))/(14)+(0.12xx4xx(theta-0))/(12)`
`0.02(10-theta)=0.02theta+0.019`
`theta=4^(@)C`
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