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At a given temperature if ${V_{rms}}$ is the root mean square velocity of the molecules of a gas and ${V_s}$ the velocity of sound in it, then these are related as $\left( {\gamma = \frac{{{C_P}}}{{{C_v}}}} \right)$
  • A${V_{rms}} = {V_s}$
  • B${V_{rms}} = \sqrt {\frac{3}{\gamma }} \times {V_s}$
  • C${V_{rms}} = \sqrt {\frac{\gamma }{3}} \times {V_s}$
  • D${V_{rms}} = \left( {\frac{3}{\gamma }} \right) \times {V_s}$
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