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 ..... $J$.
A$40$
B$30$
C$35$
D$25$
JEE MAIN 2019, Medium
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C$35$
c For a diatomic gas, $\mathrm{C}_{\mathrm{p}}=\frac{7}{2} \mathrm{R}$
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