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

  • question_answer
    In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.170 second. The frequency of the wave is        [CBSE PMT 1998; AIIMS 2001;  AFMC 2002; CPMT 2004]

    A)            1.47 Hz                                    

    B)            0.36 Hz

    C)            0.73 Hz                                    

    D)            2.94 Hz

    Correct Answer: A

    Solution :

               Time required for a point to move from maximum displacement to zero displacement is \[t=\frac{T}{4}=\frac{1}{4n}\] Þ \[n=\frac{1}{4t}=\frac{1}{4\times 0.170}=1.47\,Hz\]


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