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Concepts Of Physics MCQ Edition [Volume 1]PhysicsSound Waves

Determine the fundamental frequency of vibration for an open organ pipe measuring 5 cm in length. Assume the speed of sound in air is 340 m s ⁻¹ .

Options

  1. A6.8 kHz
  2. B34 kHz
  3. C3.4 kHz
  4. D1.7 kHz

Correct answer

C. 3.4 kHz

Step-by-step solution

For an open organ pipe, the fundamental frequency is given by: f = v 2L Given v = 340 m s ⁻¹ and L = 5 cm = 0.05 m . Substituting the values: f = 340 2 0.05 f = 340 0.1 f = 3400 Hz = 3.4 kHz

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