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NEET Physics Atomic Physics NEET PYQ-Atomic Physics

  • question_answer
    The total energy of an electron in an atom in an orbit is -3.4 eV. Its kinetic and potential energies are, respectively-                                                                                                                                 [NEET 2019]

    A)  3.4 eV, - 6.8 eV

    B)       3.4 eV, 3.4 eV

    C)  - 3.4 eV, - 3.4 eV

    D)      - 3.4 eV, - 6.8 eV

    Correct Answer: A

    Solution :

    [a] Total energy = - [K.E]
    \[\therefore K.E.=+3.4\text{ }eV\]Potential energy= -2 (Total energy)
    = -6.8 Ev


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