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NEET2023PhysicsWaves and SoundActual

The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length is:

Options

  1. A3 : 1
  2. B1 : 2
  3. C2 : 1
  4. D1 : 3

Correct answer

C. 2 : 1

Step-by-step solution

Fundamental frequency of open pipe is given by, f o p e n = v 2 l . Fundamental frequency of closed pipe is given by, f c l o s e d = v 4 l . Therefore, f o p e n f c l o s e d = v 2 l × 4 l v ⇒ f o p e n : f c l o s e d = 2 : 1

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