A bimetal made of copper and iron strips welded together is straight at room temperature. It is held vertically in the hand so that iron strip is towards the left hand and copper strip is towards the

Question

A bimetal made of copper and iron strips welded together is straight at room temperature. It is held vertically in the hand so that iron strip is towards the left hand and copper strip is towards the right hand side. This bimetal is then heated by flame. Given that the coefficient of thermal expansion of copper is more than that of iron. The bimetal strip will:

Options:

Answer:

C

Solution:

Copper (right) expands more, so it takes the outer (convex) side and the strip curves with its centre on the left: bends towards left. Answer (C).

TestHub · Accepted Answer

Copper (right) expands more, so it takes the outer (convex) side and the strip curves with its centre on the left: bends towards left. Answer (C).

Physics - Heat & Thermo Question with Solution | TestHub

Options:

Doubts & Discussion