JEE Main & Advanced Physics Wave Mechanics Question Bank Progressive Waves

  • question_answer
    The equation of a sound wave is                    \[y=0.0015\sin (62.4x+316\,t)\]            The wavelength of this wave is [CBSE PMT 1996; AFMC 2002; AIIMS 2002]

    A)            0.2 unit                                   

    B)            0.1 unit

    C)            0.3 unit                                   

    D)            Cannot be calculated

    Correct Answer: B

    Solution :

               Compare with \[y=a\sin (\omega \,t-kx)\]            We have \[k=\frac{2\pi }{\lambda }=62.4\]Þ \[\lambda =\frac{2\pi }{62.4}\]=0.1


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