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AP EAMCET202418 May 2024Morning ShiftPhysicsWaves and SoundActual

Two stretched strings A and B when vibrated together produce 4 beats per second. If the tension applied to the string A increased, the number of beats produced per second is increased to 7. If the frequency of string B is 480 Hz initially. The frequency of string A is

Options

  1. A473 Hz
  2. B476 Hz
  3. C484 Hz
  4. D487 Hz

Correct answer

C. 484 Hz

Step-by-step solution

n _ A n _ B =4 Now, if tension in string A increased, then frequency of string A increased and beats produced increased. array ll & n _ A n _ B & n _ B =480 H ₂ & n _ A = n _ B +4=480+4=484 ~Hz array

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