Question

Two gases exert pressure in the ratio 3: 2 and their densities are in the ratio 2: 3, then the ratio of their R.M.S. velocities is ...........

Options

• 2:3

• 3:2

• 2:1

• 1:2

Answer 1

3:2

P= `1/3 ρc^2`

`c_1/c_2 = sqrt(P_1/P_2 xx rho_1/rho_2) = 3/2`