Physics - Heat & Thermo Question with Solution | TestHub

In (i)$T\propto PV\propto V^{-2}$, so$T$falls to a

quarter. In (ii)$T\propto V^2$, so$T$rises to four times. A is

correct. In (i) the heat capacity is

$C=C_v+\frac{R}{1-3}=1.5R-0.5R=R>0$with$\Delta T<0$,

so$Q<0$(C). In (ii)

$C=1.5R+\frac{R}{1-\left(-1\right)}=2R>0$with

$\Delta T>0$, so$Q>0$(D). A, C and D.