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  4. A bimetallic strip consists of metals X and Y. It is mounted rigidly at the base as shown. The metal X has a higher coefficient of expansion compared to that for metal Y. When bimetallic strip is placed in a cold bath :

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Q. A bimetallic strip consists of metals $X$ and $Y$. It is mounted rigidly at the base as shown. The metal $X$ has a higher coefficient of expansion compared to that for metal $Y$. When bimetallic strip is placed in a cold bath :Physics Question Image

AIIMSAIIMS 2006Thermal Properties of Matter

Solution:

The metal $X$ has a higher coefficient of expansion compared to that for metal $Y$ so, on placing bimetallic strip in a cold bath, $X$ will shrink more than $Y$. Hence, the strip will bend towards the left.