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Condensation

Why does a bi...

Question

Why does a bimetallic strip bend on heating ?

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Solution

A bimetallic strip consists of a strip of two different metals welded together. When we heat it, different metals expand by different amounts. It bends due to thermal expansion. Thermal expansion is the tendency of matter to change in shape, area, and volume in response to a change in temperature.

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Q. Two identical rectangular strips, one of copper and the other of steel, are riveted together to form a bimetallic strip (α_copper > α_steel). On heating, this strip will
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Q. A bimetallic strip is made of metals M₁ and M₂. On cooling through the same temperature, M₁ contrast more than M₂. When the strip is heated, it will

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A bimetallic strip bends on heating due to?

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Q. A bimetallic is made of two strips A and B having coefficients of linear expansion

α_{A}

α_{B}

α_{A}

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, then on heating, the strip will

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