$A$ particle is performing $U.C.M.$ along the circumference of a circle of diameter $50 \ cm$ with a frequency of $2 \ Hz$. The acceleration of the particle in $m/s^2$ is:

  • A
    $2 \pi^2$
  • B
    $4 \pi^2$
  • C
    $8 \pi^2$
  • D
    $\pi^2$

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