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NEET-XII-Physics

P1 year:2019

with Solutions - page 2
Qstn# 27 Prvs-QstnNext-Qstn
  • #27
    The total energy of an electron in an atom in
    an orbit is -3.4 eV. Its kinetic and potential
    energies are, respectively:
    (1) -3.4 eV, -3.4 eV
    (2) -3.4 eV, -6.8 eV
    (3) 3.4 eV, -6.8 eV
    (4) 3.4 eV, 3.4 eV
    digAnsr:   3
    Ans : ( 3 )
    Sol. In Bohr's model of H atom
    ∴
    U
    K.E. TE
    2
    = =
    ∴ K.E. = 3.4 eV
    U = -6.8 eV