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JEE Main & Advanced Physics Wave Mechanics Question Bank Progressive Waves

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    The equation of progressive wave is \[y=0.2\sin 2\pi \left[ \frac{t}{0.01}-\frac{x}{0.3} \right]\], where \[x\] and \[y\] are in metre and \[t\] is in second. The velocity of propagation of the wave is                     [KCET 2000]

    A)            30 m/s                                    

    B)            40 m/s

    C)            300 m/s                                  

    D)            400 m/s

    Correct Answer: A

    Solution :

               \[v=\frac{\text{co-efficient of }t}{\text{co-efficient of }x}=\frac{2\pi /0.01}{2\pi /0.3}=30\,m/s\]


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