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  3. RAJASTHAN PMT

RAJASTHAN PMT Rajasthan - PMT Solved Paper-1999

  • question_answer
    A tuning fork produce 2 beats when B sounded with one oscillator of frequency k 514 Hz, and produces 6 beats with the f other oscillator of frequency 510 Hz. The frequency of tuning fork is:

    A)  516 Hz                                 

    B)  510 Hz 

    C)         514 Hz                 

    D)         520 Hz

    Correct Answer: A

    Solution :

    Tuning fork produces 2 beats with oscillator of 514 Hz. \[\therefore \] frequency of tuning fork \[{{n}_{1}}=514\underline{+}2\] = 516 or 512 Hz Similarly, \[{{n}_{2}}=510\pm \,6=514\] or 504 Hz \[\therefore \] frequency of tuning fork = 516 Hz


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