Two gases Ar (40) and Xe (131) at same temperature have same number density. Their diameters are `0.07 nm` and `0.10 nm` respectively. Find the ratio of their mean free time

Two gases-argon (atomic radius 0.07 nm, atomic weight 40) and xenon (atomic radius 0.1 nm, atomic weight 140) have the same number density and are at the same temperature. The ratio of their respective mean free times is closest to :

Tow gases-argon (atomic radius 0.07 nm, atomic weight 40) and xenon (atomic radius 0.1 nm, atomic weight 140) have the same number density and are at the same temperature. The ratio of their respective mean free times is closest to :

Two different gases at the same temperature have equal root mean square velocities.

Two different gases at the same temperature have equal root mean square velocities?

If at same temperature and pressure, the densities for two diatomic gases are respectively d_(1) and d_(2) , then the ratio of velocities of sound in these gases will be

If at same temperature and pressure, the densities for two diatomic gases are respectively d_(1) and d_(2) , then the ratio of velocities of sound in these gases will be

If at same temperature and pressure, the densities for two diatomic gases are respectively rho_1 and rho_2 , then the ratio of velocities of sound in these gases will be

If at same temperature and pressure the densities fro two diatomic gases are respectively d_(1) and d_(2) , then the ratio of velocity of sound in these gases will be

If at the same temperature and pressure, the densities of two diatomic gases are d_(1) and d_(2) respectively. The ratio of mean kinetic energy permolecule of gasses will be