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NEET Sample Paper NEET Sample Test Paper-32

  • question_answer
    A simple harmonic progressive wave is represented by the equation \[:y\,=8\,\sin 2\pi (0.1x-2t)\] where x and y are in cm at t is in seconds. At any instant the phase difference two particles separated by 2 cm in the x direction is :-

    A)  \[{{18}^{o}}\]               

    B)  \[{{36}^{o}}\]

    C)  \[{{54}^{o}}\]               

    D)  \[{{72}^{o}}\]

    Correct Answer: D

    Solution :

    For given equation \[k=0.2\pi \Rightarrow \frac{2\pi }{\lambda }=0.2\pi \Rightarrow \lambda =10\,cm\] \[\Delta \phi =\frac{2\pi }{\lambda }\Delta x=\frac{2\pi }{10}\times 2=\frac{2\pi }{5}={{72}^{o}}\]


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