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NEET Sample Paper NEET Sample Test Paper-12

  • question_answer
    A stationary particle explodes into two particles of a masses\[{{m}_{1}}\]and\[{{m}_{2}}\]which move in opposite directions with velocities \[{{v}_{1}}\]and \[{{v}_{2}}.\]The ratio of their kinetic energies\[{{E}_{1}}/{{E}_{2}}\] is

    A) \[{{m}_{1}}/{{m}_{2}}\]                     

    B)  1

    C) \[{{m}_{1}}{{v}_{2}}/{{m}_{2}}{{v}_{1}}\]             

    D) \[{{m}_{2}}/{{m}_{1}}\] 

    Correct Answer: D

    Solution :

    \[E=\frac{{{P}^{2}}}{2m}\Rightarrow E\propto \frac{1}{m}\Rightarrow \frac{{{E}_{1}}}{{{E}_{2}}}=\frac{{{m}_{2}}}{{{m}_{1}}}\]


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