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NEET AIPMT SOLVED PAPER 1998

  • question_answer
                    In a sinusoidal wave, the time required for a particular point, to move from maximum displacement to zero displacement is 0.170 s. The frequency of the wave is:  

    A)                 1.47 Hz 

    B)                 0.36 Hz

    C)                 0.73 Hz                 

    D)                 2.94 Hz 

    Correct Answer: A

    Solution :

                    If T is the time period, then time required for a point to move from maximum displacement is zero displacement is \[\frac{T}{4}\]. \[\therefore \frac{T}{4}=0.170\] or            \[T=0.170\times 4=0.680\,s\]                 Therefore, the frequency of wave is                 \[n=\frac{1}{T}=\frac{1}{0.680}=1.47\,Hz\]


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