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JEE Main & Advanced Physics Wave Mechanics Question Bank Progressive Waves

  • question_answer
    In a plane progressive wave given by \[y=25\cos (2\pi t-\pi x)\], the amplitude and frequency are respectively  [BCECE 2003]

    A)            25,100                                     

    B)            25, 1

    C)            25, 2                                         

    D)            \[50\pi ,\,\] 2

    Correct Answer: B

    Solution :

               Comparing the given equation with \[y=a\cos (\omega t-kx)\]                    \[a=25,\] \[\omega =2\pi n=2\pi \]Þ \[n=1Hz\]


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