JEE Main & Advanced Physics Nuclear Physics And Radioactivity Question Bank Radioactivity

  • question_answer
    In the given reaction\[_{z}{{X}^{A}}{{\to }_{z+1}}{{Y}^{A}}{{\to }_{z-1}}{{K}^{A-4}}{{\to }_{z-1}}{{K}^{A-4}}\]Radioactive radiations are emitted in the sequence   [AIIMS 1982; CBSE PMT 1993; AFMC 1999; MP PET 2002]

    A)            \[\frac{2{{\varepsilon }_{0}}hc}{{{e}^{2}}}\]              

    B)            \[\beta ,\ \alpha ,\ \gamma \]

    C)            \[\gamma ,\ \alpha ,\ \beta \]                                         

    D)            \[\beta ,\ \gamma ,\ \alpha \]

    Correct Answer: B

    Solution :

               \[_{Z}{{X}^{A}}\xrightarrow{_{-1}{{\beta }^{0}}}{{\,}_{Z+1}}{{Y}^{A}}\xrightarrow{2H{{e}^{4}}(\alpha )}\]\[{{\,}_{Z-1}}{{K}^{A-4}}\xrightarrow{_{0}{{\gamma }^{0}}}{{\,}_{Z-1}}{{K}^{A-4}}\]


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