Question

Air pressure in a car tyre increases during driving. Explain.

Answer 1

Charles law states that the volume of an ideal gas is directly proportional to the absolute temperature at constant pressure.

Frictional force acts between the tyres of the car and the road. During driving, the work is done against the frictional force which is converted into heat.
Therefore, the temperature increases while the volume of the tyre remains constant. Now as per the Charles law, $P\alpha T$ hence, pressure of gas in the tyre increases.