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# A composite metal bar of uniform section is made up of length of copper, of nickel and of aluminium. Each part being in perfect thermal contact with the adjoining part. The copper end of the composite rod is maintained at and the aluminium end at . The whole rod is covered with belt so that no heat loss occurs at the sides. If and , then what will be the temperatures of and junctions respectively

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## The correct answer is: and

### If suppose and

Since all metal bars are connected in series

So

Hence, it

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