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JEE Main20205 Sep 2020Morning ShiftPhysicsWaves and SoundActual

In a resonance tube experiment when the tube is filled with water up to a height of 17 . 0 cm , from bottom, it resonates with a given tuning fork. When the water level is raised the next resonance with the same tuning fork occurs at a height of 24 . 5 cm . If the velocity of sound in air is 330 m s - 1 , the tuning fork frequency is :

Options

  1. A2200   Hz
  2. B550   Hz
  3. C1100   Hz
  4. D3300   Hz

Correct answer

A. 2200   Hz

Step-by-step solution

λ 2 = 24 . 5 - 17 = 7 . 5   cm f = V λ = 330 × 100 15 = 2200   Hz

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