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NEET Sample Paper NEET Sample Test Paper-30

  • question_answer
    When a wave travels in a medium the particles displacement in given by the equation \[y=0.03\,\sin \pi \] \[(2t-0.01x),\] where x and y are in metre and t in sec. The wavelength of the wave will be:

    A)  \[200\,m\]     

    B)  \[400\,m\]

    C)  \[40\,m\]                     

    D)  \[10\,m\]

    Correct Answer: A

    Solution :

    Displacement is given by the acceleration \[y=0.03\sin \pi (2t-0.01x)\]     ?.(i) Comparing the given equation (i) with standard equation (ii) we have,             \[\frac{2}{\lambda }=0.01\] \[\Rightarrow \]            \[\lambda =\frac{2}{0.01}=200\,m\]           


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