Expansion on heating can be of a nuisance. Give some examples.

The following examples show that expansion on heating can be

of nuisance.

• During hot summer days, due to heat the metal in the railway lines may get expanded and cause a change in its shape which may lead to a mishap.

• During hot summer days, due to heat the floor or wall of cement building may get the cracks.

• Due to heat generated during operating of some machines, the parts may get expanded and can cause a problem.