Chemistry - Ideal Gas Question with Solution | TestHub

${\mathrm{H}}_2$ and He are kept in a container at partial pressures ${\mathrm{P}}_1$ and ${\mathrm{P}}_2$. A thin perforation is made in the wall of the container and it is observed that the two gases effuse out at the same rate after 4 effusion steps. The ratio ${\mathrm{P}}_1:{\mathrm{P}}_2$ will be :