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Question 31257
JEE Physics · Hard

Sound Waves: Closed Pipe MCQ

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Closed PipeHardQuestion 31257

Question

A closed pipe of length 1 m (v = 300 m/s) is overblown to produce 3rd harmonic. This frequency is:
  1. A
    75 Hz
  2. B
    225 Hz
    Correct
  3. C
    150 Hz
  4. D
    300 Hz

Correct answer

225 Hz

Explanation

Closed pipe 3rd harmonic: f₃ = 3v/(4L) = 3×300/4 = 225 Hz.

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