$A$ weightless spring which has a force constant $k$ oscillates with frequency $n$ when a mass $m$ is suspended from it. The spring is cut into two equal halves and a mass $2m$ is suspended from one of the halves. The frequency of oscillation will now become:

  • A
    $n$
  • B
    $2n$
  • C
    $\frac{n}{\sqrt{2}}$
  • D
    $n\sqrt{2}$

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