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CMC Medical CMC-Medical Ludhiana Solved Paper-2013

  • question_answer
    Two bodies of mass m and 4m have equal KE. What is the ratio of their momentum?

    A)  1 : 4                                      

    B)  1 : 2

    C)  1 : 1                                      

    D)  2 : 1

    Correct Answer: B

    Solution :

                    Momentum \[p=\sqrt{2m{{E}_{k}}}\] Both bodies have equal kinetic energy So,          \[\frac{{{p}_{1}}}{{{p}_{2}}}=\sqrt{\frac{{{m}_{1}}}{{{m}_{2}}}}\] \[\frac{{{p}_{1}}}{{{p}_{2}}}=\frac{\sqrt{m}}{4m}\] \[{{p}_{1}}:{{p}_{2}}=1:2\]


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