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JEE Main & Advanced Physics Wave Mechanics Question Bank Vibration of String

  • question_answer
    A string in musical instrument is 50 cm long and its fundamental frequency is 800 Hz. If a frequency of 1000 Hz is to be produced, then required length of string is  [AIIMS 2002]

    A)            62.5 cm                                   

    B)            50 cm

    C)            40 cm                                      

    D)            37.5 cm

    Correct Answer: C

    Solution :

                 \[{{n}_{1}}{{l}_{1}}={{n}_{2}}{{l}_{2}}\Rightarrow 800\times 50=1000\times {{l}_{2}}\Rightarrow {{l}_{2}}=40\]\[cm\]


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