An organ pipe has a fundamental frequency of $80 \ Hz$. If one end of the pipe is closed,what are the frequencies produced? (Neglect end correction)

  • A
    $40, 80, 120, 160, \ldots$
  • B
    $40, 80, 160, 240, \ldots$
  • C
    $80, 240, 400, 560, \ldots$
  • D
    $80, 160, 240, 320, \ldots$

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