Two identical rectangular strips, one of copper and the other of steel, are rivetted together to from a bimetallic strip $(α_{c o p p e r} > α_{s t e e l})$ . On heating, this strip will

remain straight

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bend with copper on convex side

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bend with steel on convex side

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get twisted

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Solution

The correct option is B bend with copper on convex side
Here, the two different material is used to form a single piece,also steel is heavier metal as compare to copper where thermal conductivity of copper is higher than that of steel,hence due to heating copper will start expanding but a layer of steel are overlapping on its surface which apply its weight on steel due to which convex shape will be occur in copper side.

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Two identical rectangular strips, one of copper and the other of steel, are rivetted together to from a bimetallic strip (αcopper>αsteel). On heating, this strip will

Two identical rectangular strips, one of copper and the other of steel, are rivetted together to from a bimetallic strip $(α_{c o p p e r} > α_{s t e e l})$ . On heating, this strip will