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If the oxygen ($O_2$) has root mean square velocity of $C\,m{s^{ - 1}}$, then root mean square velocity of the hydrogen ($H_2$) will be
  • A$C\,m{s^{ - 1}}$
  • B$\frac{1}{C}\,m{s^{ - 1}}$
  • C$4\,C\,m{s^{ - 1}}$
  • D$\frac{C}{4}\,m{s^{ - 1}}$
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