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NEET Physics Wave Mechanics NEET PYQ-Wave Mechanics

  • question_answer
    A wave travelling in the positive a-direction having displacement along .y-direction as 1 m, wavelength \[2\pi m\] and frequency of \[\frac{1}{\pi }\,Hz\] is represented by                                       [NEET 2013]

    A)  \[y=\sin (x-2t)\]

    B)  \[y=\sin (2\pi x-2\pi t)\]

    C)  \[y=\sin (10\pi x-20\pi t)\]

    D)       \[y=\sin (2\pi x+2\pi t)\]

    Correct Answer: A

    Solution :

    Given \[A=1\,m\]
    As         \[y=a\sin \,(kx-\omega t)\]
    \[=\sin \left( \frac{2\pi }{2\pi }\times -2\pi \times \frac{1}{\pi }t \right)\]
    \[=\sin (x-2t)\]


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