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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2007

  • question_answer
        A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane, it follows that

    A)  its velocity is constant

    B)  its acceleration is constant

    C)  its kinetic energy is constant

    D)  it moves in a straight line

    Correct Answer: C

    Solution :

                    When a force of constant magnitude acts on velocity of particle perpendicularly, then there is no change in the kinetic energy of particle. Hence, kinetic energy remains constant.


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