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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2006

  • question_answer
        A bomb at rest explodes into 3 parts of the same mass. The momentum of the 2 parts is \[-2p\hat{i}\]and\[p\hat{j}\]. The momentum of the third part will have a magnitude of

    A)  \[P\]                                    

    B)  \[\sqrt{3p}\]

    C)  \[p\sqrt{5}\]                                    

    D)  zero

    Correct Answer: C

    Solution :

                    Momentum of the third part will be equal to the resultant of momenta of two parts \[{{p}_{3}}=\sqrt{p_{1}^{2}+p_{2}^{2}}\] \[{{p}_{3}}=\sqrt{{{(-2p)}^{2}}+{{p}^{2}}}\] \[{{p}_{3}}=p\sqrt{5}\]


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