NEET Sample Paper NEET Sample Test Paper-50

  • question_answer The displacement of a particle varies according to the relation \[x=4\,\,\,(cos\,\,\pi t\,\,+\,\,sin\,\,\pi t)\]. The amplitude of the particle is-

    A) 8                                 

    B) -4

    C) 4                                 

    D) \[4\sqrt{2}\]

    Correct Answer: D

    Solution :

    \[x=4\text{ }cos\text{ }\pi t+4\text{ }sin\text{ }\pi t\] \[A=\sqrt{{{4}^{2}}+{{4}^{2}}}\,\,=\,\,4\sqrt{2}\]

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