MCQ
An ideal gas in a thermally insulated vessel at internal pressure $=P_1$, volume $=V_1$ and absolute temperature $= T _1$ expands irreversibly against zero external pressure, as shown in the diagram. The final internal pressure, volume and absolute temperature of the gas are $P _2, V _2$ and $T _2$, respectively. For this expansion,
$(A)$ $q=0$ $(B)$ $T_2=T_1$ $(C)$ $P_2 V_2=P_1 V_1$ $(D)$ $P_2 V_2^\gamma=P_1 V_1^\gamma$
- ✓$(A,B,C)$
- B$(A,B,D)$
- C$(A,C,D)$
- D$(B,C,D)$