Q.

A bimetallic strip consists of metals X and Y. It is mounted rigidly at the bases as shown. The metal X has a higher coefficient of expansion compared to that for metal Y. When bi-metallic strip is placed in a cool bath. 

 

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a

It will neither bend nor shrink

b

It will bend towards the left

c

It will bend towards the right

d

It will not bend but shrink 

answer is B.

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Detailed Solution

The co-efficient  of linear expansion of  X>Y , when cooled 'X' contracts more than Y hence it will bend left.

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