CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2004

  • question_answer
    The kinetic energy of a body becomes four times its initial value. The new momentum will be...............:

    A)  same as the initial value

    B)  twice the initial value

    C)  thrice the initial value

    D)  four times the initial value

    E)  half of its initial value

    Correct Answer: B

    Solution :

    \[K\propto {{p}^{2}}\] \[\Rightarrow \]               \[\frac{{{p}_{2}}}{{{p}_{1}}}=\sqrt{\frac{{{K}_{2}}}{{{K}_{1}}}}=\sqrt{4}\] \[\Rightarrow \]               \[{{p}_{2}}=2{{p}_{1}}\]


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