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NEET2004PhysicsWaves and SoundActual

An organ pipe closed at one end has fundamental frequency of 1500 ~Hz . The maximum number of overtones generated by this pipe which a normal person can hear is

Options

  1. A14
  2. B13
  3. C6
  4. D9 .

Correct answer

C. 6

Step-by-step solution

Human ear can hear frequencies upto 20,000 ~Hz . So for closed pipe, overtone, v = n v 4 L =n fundamental frequency 20,000=n 1500 n 13 . Maximum possible harmonics obtained =1,3,5,7,9,11,13 Therefore one can hear maximum upto 13^ th harmonics. Overtone =7-1=6

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