A copper plate and an iron plate of the same volume are riveted together. Explain the likely observations, when the system is heated.

A copper plate and an iron plate of the same volume are riveted togeth

1.	A copper plate and an iron plate of the same volume are riveted together. Explain the likely observations, when the system is heated.
Answer» Solution :On heating, the strip will bend, instead of remaining STRAIGHT. SINCE coefficient of linear expansion of copper `(alpha_(Cu))` is more than that of iron `(alpha_(Fe))`, the plates EXPAND differently and THUS the system bends. The copper plate forms the outer surface due to a greater expansion, and the iron plate forms the inner surface of the arc. If the coefficients of linear expansion would have been the same for copper and iron, then the strip would remain straight.