Physics-
General
Easy
Question
A composite metal bar of uniform section is made up of length 25 cm of copper, 10 cm of nickel and 15 cm 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 there is no heat loss occurs at the sides. If
and
, then what will be the temperatures of
and
junctions respectively

and
and
and
and
The correct answer is:
and 
If suppose
and 
Since all metal bars are connected in series
So 
and 
Þ 

Hence, if 
Þ 
Þ
Þ 
Similar if 
Þ
Þ 
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