The ratio of most probable velocity $(u_{mp})$,average velocity $(u_{av})$,and root mean square velocity $(u_{rms})$ is:

  • A
    $\sqrt{2} : \sqrt{\frac{8}{\pi}} : \sqrt{3}$
  • B
    $1 : \sqrt{2} : \sqrt{3}$
  • C
    $\sqrt{2} : \sqrt{3} : \sqrt{8}$
  • D
    $\sqrt{1} : \sqrt{8\pi} : \sqrt{3}$

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