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JEE Main & Advanced Physics Wave Mechanics Question Bank Progressive Waves

  • question_answer
    Equation of the progressive wave is given by : \[y=a\sin \pi (40t-x)\] where \[a\] and \[x\] are in metre and \[t\] in second. The velocity of the wave is                        [KCET 1999]

    A)            80 m/s                                    

    B)            10 m/s

    C)            40 m/s                                    

    D)            20 m/s

    Correct Answer: C

    Solution :

               \[v=\frac{\text{Co-efficient of }t}{\text{Co-efficient of }x}=\frac{40}{1}=40\,m/s\]


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