KVPY Sample Paper KVPY Stream-SX Model Paper-5

  • question_answer
    When a free neutron decays to form a proton and an electron, then choose the incorrect statement.

    A) The reaction may be expressed as \[\,{{\,}_{0}}{{n}^{1}}\to \,{{\,}_{1}}{{p}^{1}}+\,{{\,}_{-1}}{{e}^{0}}\]

    B) Every electron comes out with the same energy

    C) The electron shares the major part of the energy released

    D) All the above

    Correct Answer: D

    Solution :

    [D] \[_{0}{{n}^{1}}\to {{\,}_{1}}{{p}^{1}}+\,{{\,}_{-1}}{{e}^{0}}+\text{\vec{v}}\] The electron comes out with a spectrum of energies. The energy released is shared between electron and neutrino.

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