A bicycle tyre is filled with air having pressure of $270\,kPa$ at $27^{\circ}\,C$. The approximate pressure of the air in the tyre when the temperature increases to $36^{\circ}\,C$ is $............kPa$
JEE MAIN 2023, Easy
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Taking volume constant:$\frac{ P _1}{ T _1}=\frac{ P _2}{ T _2}$
$\Rightarrow P _2=\frac{ P _1}{ T _1} \times T _2=\frac{270 \times(309)}{300}$
$=278\,kPa$
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