s Solved papers for JEE Main & Advanced Physics Wave Mechanics JEE PYQ-Wave Mechanics - Studyadda.com
  2. Solved Papers
  3. JEE Main & Advanced
  4. Physics
  5. Wave Mechanics

JEE Main & Advanced Physics Wave Mechanics JEE PYQ-Wave Mechanics

  • question_answer
    When two tuning forks (fork 1 and fork 2) are sounded simultaneously, 4 beats/s are heard. Now, some tape is attached on the prong of the fork 2. When the tuning forks are sounded again, 6 beats/s are heard. If the frequency of fork 1 is 200 Hz, then what was the original frequency of fork 2?                     [AIEEE 2005]

    A)  200 Hz                        

    B)  202 Hz

    C)  196 Hz            

    D)       204 Hz

    Correct Answer: C

    Solution :

    [c]
    The frequency of foror 204 Hz Since, on attaching the tape on the prong of forits frequency decreases, but now the number of beats per second is 6 i.e., the frequency difference now increases.
    It is possible only when before attaching the tape, the frequency of foris less than the frequency of tuning for. Hence, the frequency of foris 196 Hz.


You need to login to perform this action.
You will be redirected in 3 sec spinner