# Ratio of pressures exerted by two gases is 3 : 2 and their densities are in the ratio 2 : 3. The ratio of their R.M.S. velocities is

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Ratio of pressures exerted by two gases is 3 : 2 and their densities are in the ratio 2 : 3. The ratio of their R.M.S. velocities is
A.  2 : 3
B.  3 : 2
C.  2 : 1
D.  1 : 2

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