NEET Sample Paper NEET Sample Test Paper-50

  • question_answer Two tuning forks when sounded together produced 4 beats/sec. The frequency of one fork is 256. The number of beats heard increases when the fork is loaded with wax. The frequency of the other fork is-

    A) 504                              

    B) 520

    C) 260                              

    D) 252

    Correct Answer: C

    Solution :

    \[\,{{\nu }_{unknown}}\,\,=\,\,{{\nu }_{known}}\pm \,\,4\] \[=\,\,256\,\,+\,\,4\] \[=\,\,260\,Hz\]

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