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NEET Sample Paper NEET Sample Test Paper-38

  • question_answer
    If \[m,{{m}_{n}}\]and \[{{m}_{p}}\] are the masses of\[{{\,}_{Z}}{{X}^{A}}\]nucleus, neutron and proton respectively.

    A) \[m<(A-Z){{m}_{n}}+Z{{m}_{p}}\]

    B) \[m=(A-Z){{m}_{n}}+Z{{m}_{p}}\]

    C) \[m=(A-Z){{m}_{p}}+Z{{m}_{n}}\]

    D) \[m>(A-Z){{m}_{n}}+Z{{m}_{p}}\]  

    Correct Answer: A

    Solution :

     The mass of nucleus formed is always less than  the sum of the masses of the constituent protons and neutrons, i.e., \[<(A-Z){{m}_{n}}+Z{{m}_{p}}.\]


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