Let $\bar{v}$,$v_{rms}$ and $v_p$ respectively denote the mean speed,root mean square speed and most probable speed of the molecules in an ideal monoatomic gas at absolute temperature $T$. The mass of the molecule is $m$. Then:

  • A
    no molecule can have a speed greater than $(\sqrt{2} v_{rms})$
  • B
    no molecule can have a speed less than $\frac{v_p}{\sqrt{2}}$
  • C
    $\bar{v} < v_p < v_{rms}$
  • D
    the average kinetic energy of the molecules is $\frac{3}{4}(mv_p^2)$

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