The expression of average speed (uav) of molecules of a gas is given by
1
\(\left(\frac{8 R T}{\pi m}\right)^{1 / 2}\)
2
\( \left(\frac{8 R T}{\pi M}\right)^{1 / 2}\)
3
\(\left(\frac{3 R T}{\pi m}\right)^{1 / 2}\)
4
\( \left(\frac{3 R T}{m}\right)^{1 / 2}\)