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MGIMS WARDHA MGIMS WARDHA Solved Paper-2014

  • question_answer
    The displacement y of a particle in a medium can be expressed as \[y={{10}^{-6}}\sin (100t+20x+\pi /4)m,\]where t is in second and\[x\]in metre. The speed of the wave is

    A)  2000m/s             

    B)  5 m/s

    C)  20 m/s                

    D)  57cm/s

    Correct Answer: B

    Solution :

                    The speed of the wave\[v=\frac{\omega }{k}=\frac{100}{20}=5m/s\]


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