For an ideal gas, the following conversions are made:

Question

$1) P, V, T (\text{initial conditions}) \;\;\underrightarrow{\text{Isothermally}} \;\;2V, P_i, T$

$2) P, V, T (\text{initial conditions}) \;\;\underrightarrow{\text{Adiabatically}} \;\;2V_i, P_a,T$

Now, if $K_{gas} = \large\frac{P_a}{P_i}$, find $\large \frac{K_{H_2}}{K_{He}}$ (A) 1 (B) 1.2 (C) 0.83 (D) 1.44