Question

When a strip made of iron and copper is heated it bends with?

Answer 1

$\huge{\fbox{\fbox{\mathfrak{\red{Answer}}}}}$

•Since the linear expansion coefficient of copper is higher than iron. So when heated, copper will expand more than iron. So the length of copper will become more than iron after heating. Now since they are combined in a strip and have different length, the strip will bend such that iron is on concave side.

Answer 2

when a strip made up of Copper and iron is heated it bends with iron on the concave side due to the following reasons:

- Since, the linear expansion coefficient of iron is lower than the linear expansion coefficient of the copper.

- So, when the strip is heated copper will expand more than that of the iron.

- So, After heating the length of the wire become less and the length of the copper become more.

- Now, since they have different length and they are combined in a strip the strip will bend such that the iron is on the concave side.