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  4. A bimetallic strip consists of metals X and Y . It is mounted rigidly at the base, as shown in the figure. The metal X has a higher coefficient of expansion as compared to that for metal Y . When the bimetallic strip is placed in a cold bath <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-97xy7npmi4aj.png />

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

Question

NTA AbhyasNTA Abhyas 2020Waves

Solution:

As $\alpha _{x}>\alpha _{y}$ , on cooling $X$ contracts more than $Y$ . So, the strip bends towards $X$ , i.e., towards left.