The ratio among most probable velocity, mean velocity and root mean square velocity is given by

1 : 2 : 3

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Solution

The correct option is D

most probable velocity : mean velocity : $V_{r m s}$

$= \sqrt{\frac{2 R T}{M}} : \sqrt{\frac{8 R T}{π M}} : \sqrt{\frac{3 R T}{M}} = \sqrt{2} : \sqrt{\frac{8}{π}} : \sqrt{3}$

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