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Expansion of Solids

When a bimeta...

Question

When a bimetallic strip is heated:

A

it does not bend at all

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B

it gets twisted in the form of an helix

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C

it bends in the form of an arc

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D

it's length increases linearly

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Solution

The correct option is C it bends in the form of an arc
A bimetallic strip on being heated bends in the form of an arc. It expands in such a way that the more expandable metal (A) is outside as shown in the figure.

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