Explain the following:
The tyre of an automobile is inflated to a lesser pressure in summer than in winter.

Explanation

In summer, due to higher temperature, the average kinetic energy of the air molecules inside the type increases, i.e., molecules start moving faster. Hence, the pressure on the walls of the tube increases. If pressure inside is not kept low at the time of inflation, at higher temperature, the pressure may become so high that the tyre may burst.