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PhysicsNEET 2020Superposition, standing waves, beats

Waves

In a guitar, two strings A and B made of the same material are slightly out of tune and produce beats of frequency 6 Hz. When the tension in B is slightly decreased, the beat frequency increases to 7 Hz. If the frequency of A is 530 Hz, the original frequency of B will be:

  1. A.523 Hz
  2. B.524 Hz✓
  3. C.536 Hz
  4. D.537 Hz

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