Physics - Heat & Thermo Question with Solution | TestHub

For degree of freedom, we can write

$$\begin{gathered} \mathrm{\gamma }=1+\frac{2}{\mathrm{f}}=1.4 \\ \Rightarrow \frac{2}{\mathrm{f}}=0.4 \end{gathered}$$

$\Rightarrow \mathrm{f}=5$

For isobaric process, $\mathrm{W}=\mathrm{nR}\Delta \mathrm{T}=200 \mathrm{J}$.

Now, we can write

$\mathrm{Q}=\left(\frac{\mathrm{f}+2}{2}\right)\mathrm{nR\Delta T}$

$=\frac{7}{2}\times 200=700 \mathrm{J}$