Chapter 10 - Temperature and Kinetic Theory - Learning Path Questions and Exercises - Conceptual Questions - Page 381: 14

When both the Iron ring and bar are heated, the expansion will be uniform and the bar will not bend. However, when aluminium bar is used, since the coefficient of expansion of aluminium and iron are different, it will bend because the bar will expand more.

When both the Iron ring and bar are heated, the expansion will be uniform and the bar will not bend. However, when aluminium bar is used, since the coefficient of expansion of aluminium and iron are different, it will bend because the bar will expand more.