A diatomic gas with rigid molecules does $10\, J$ of work when expanded at constant pressure. What would be the heat energy absorbed by the gas, in this process ..... $J$.
JEE MAIN 2019, Medium
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For a diatomic gas, $\mathrm{C}_{\mathrm{p}}=\frac{7}{2} \mathrm{R}$
since gas undergoes isobaric process
$\Rightarrow \Delta \mathrm{Q}=\mathrm{n} \frac{7}{2} \mathrm{R\Delta\,T}=\frac{7}{2}({nR\Delta\,T})=35 \mathrm{J}$
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