The velocity of sound is $v_s$ in air. If the density of air is increased to $4$ times,then the new velocity of sound will be

  • A
    $\frac{v_s}{2}$
  • B
    $\frac{v_s}{12}$
  • C
    $12v_s$
  • D
    $\frac{3}{2}v_s^2$

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