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NEET Sample Paper NEET Sample Test Paper-43

  • question_answer
    A particle moves in a straight line with its retardation proportional to its displacement 'x'. Change in kinetic energy Is proportional to-

    A) \[{{x}^{2}}\]              

    B) \[{{e}^{x}}\]

    C) \[x\]             

    D) \[lo{{g}_{e}}x\]

    Correct Answer: A

    Solution :

    \[a\,\propto x\] \[{{W}_{net}}=F.x\] \[\propto a.x\]             \[\propto {{x}^{2}}\] \[\therefore \,\Delta K\,\propto \,{{x}^{2}}\]


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