Question

The tyre of a motor car contains air at 15 degree Celsius, if the temperature increases to 35 degree celsius, the approximate percentage increase in pressure is (ignore to expansion of tyre):

Answer 1

Dear student,
$$\begin{gathered} ApplyingCharleslaw \\ \frac{P_2}{P_1}=\frac{T_2}{T_1} \\ or\frac{P_2-P_1}{P_1}\times 100=\frac{T_2-T_1}{T_1}\times 100 \\ Sopercentageincreaseinpressure \\ =\frac{35-15}{298}\times 100=7 \end{gathered}$$

Ans =7
Regards