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Types of Expansion in Solids

If a bimetall...

Question

If a bimetallic strip is heated, it will.

A

Bend towards the metal with higher thermal coefficient of expansion

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B

Not bend at all

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C

Twist itself into a helix

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D

Bend towards the metal with lower thermal expansion coefficient

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Solution

The correct option is D Bend towards the metal with lower thermal expansion coefficient
When a bimetallic strip is heated, metal with higher thermal expansion coefficient will bend more as a result it will bend towards the metal with lower thermal coefficient of expansion.

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