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NEET Sample Paper NEET Sample Test Paper-93

  • question_answer
    Two bodies of masses m and 4m are moving with equal kinetic energies. The ratio of their linear momenta will be

    A) 1 : 4                 

    B)        4 : 1  

    C) 1 : 2                 

    D)        2 : 1

    Correct Answer: C

    Solution :

    [c] \[\frac{{{K}_{1}}}{{{K}_{2}}}=\frac{p_{2}^{1}}{{{m}_{1}}}\times \frac{{{m}_{2}}}{p_{2}^{2}}\]\[[\therefore p=mv\Rightarrow K=\frac{{{p}^{2}}}{2m}]\] Hence,\[\frac{{{p}_{1}}}{{{p}_{2}}}=\sqrt{\frac{{{m}_{1}}}{{{m}_{2}}}}=\sqrt{\frac{1}{4}}=\frac{1}{2}\]


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