When air is pumped into a cycle tyre the volume and pressure of the air in the tyre both are increased. What about Boyle’s law in this case?
According to Boyle's law; at a constant temperature the volume of gas in inversely proportional to pressure ie it is valid only for constant mass of gas. But in this case when air is jumped continuously in tyre, so number of moles of air increases. So Boyle's or gas laws does not valid in this case.