Physics-
General
Easy

Question

Two tuning forks P and Q are vibrated together. The number of beats produced are represented by the straight line OA in the following graph. After loading Q with wax again these are vibrated together and the beats produced are represented by the line OB. If the frequency of P is 341 Hz, the frequency of Q will be ___

  1. 341 Hz    
  2. 338 Hz    
  3. 344 Hz    
  4. 330 Hz    

The correct answer is: 344 Hz

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