Two identical rectangular strips one of copper and the other of steel are rivetted together to form a bimetallic strip. What will happen on heating.

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Detailed Solution

The coefficient of linear expansion of copper is greater than that of steel. Therefore, when
bimetallic strip made of copper and steel is heated, copper strip expands more then steel
as shown below.
Question Image
As a result, the copper strip lies on convex side of the bent bimetallic strip

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