The displacement time equation of a particle executing $SHM$ is : $x = A \,sin\,(\omega t + \phi )$. At time $t = 0$ position of the particle is $x = A/2$ and it is moving along negative $x-$ direction. Then the angle $\phi $ can be
  • A$\pi /6$
  • B$\pi /3$
  • C$2\pi /3$
  • D$5\pi /6$
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