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JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER
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A bimetallic strip consists of brass and iron. When it is heated it bends into an arc with brass on the convex and iron on the concave side of the arc. This happens because
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Correct option: D
Brass has a higher coefficient of linear expansion than iron
Option D (Brass has a higher coefficient of linear expansion than iron) is correct because brass expands more than iron for the same temperature increase, causing the bimetallic strip to bend with brass on the convex side.
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