$A$ pipe of $30 \text{ cm}$ long and open at both ends produces harmonics. Which harmonic mode of the pipe resonates with a $1.1 \text{ kHz}$ source? (Given: speed of sound in air $v = 330 \text{ ms}^{-1}$)

  • A
    Fifth harmonic
  • B
    Fourth harmonic
  • C
    Third harmonic
  • D
    Second harmonic

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