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NEET Sample Paper NEET Sample Test Paper-58

  • question_answer
    If the equation of a progressive wave is given as \[y=a\,Sin\,\pi \,\left[ \frac{t}{2}-\frac{x}{4} \right]\] where x is in metres and t is in seconds, then the distance through which the waves moves in 8 sec is:

    A) 2m                               

    B) 16m   

    C) 4m                               

    D) 8m

    Correct Answer: B

    Solution :

    [b]  \[\omega =VK\text{ }general\text{ }\,\,\,y=a\text{ }sin\text{  }\!\![\!\!\text{ }\omega \,\text{-}\,\text{kx }\!\!]\!\!\text{ }\] \[y=a\,\sin \,\pi \,\left( \frac{t}{2}-\frac{x}{4} \right)\] \[V=\frac{\pi }{2}\times \frac{4}{\pi }=2m/s\] \[d=Vt\] \[d=2\times 8\] \[d=16\,metres\]


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