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Question

A bimetallic strip consisting of metals X and Y of equal length, is heated to temperature T. The shape of the bimetallic strip is deflected to form an arc as shown in the image. If α and β are the coefficients of linear expansion of metals X and Y, then


A
α>β
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B
β>α
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C
α=β
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D
Relation between α and β cannot be determined.
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Solution

The correct option is A α>β
From the image, it's clear that metal X has expanded more than metal Y. Hence, α>β.
Option (a) is correct.

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