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JEE Main & Advanced Physics Wave Mechanics Question Bank Basics of Mechanical Waves

  • question_answer
     A tuning fork makes 256 vibrations per second in air. When the velocity of sound is 330 m/s, then wavelength of the tone emitted is                               [KCET 1994; AFMC 1998;  MH CET 1999; CBSE PMT 1999]

    A)            0.56 m                                     

    B)            0.89 m

    C)            1.11 m                                     

    D)            1.29 m

    Correct Answer: D

    Solution :

               \[v=n\lambda \]Þ \[\lambda =\frac{v}{n}\]\[=\frac{330}{256}=1.29m\]


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