$P-V$ plots for two gases during adiabatic process are shown. Plots $(1)$ and $(2)$ corresponds to
$P-V$ plots for two gases during adiabatic process are shown. Plots $(1)$ and $(2)$ corresponds to
- A
$He$ and $O_2$
- B
$O_2$ and $He$
- C
$He$ and $Ar$
- D
$O_2$ and $N_2$
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