The potential energies of first, second and third Bohr’s orbits of `He ^(+)` cation are `E _(1),E_(2) and E_(3).` The correct sequanece of these energies is-

The potential energy of an electron in the second Bohr's orbit of the He^(+) ion is :-

Calculate the energy of an electron in the first Bohr orbit of He^(+) .

Calculate the energy of an electron in the first Bohr orbit of He^(+) .

Calculate the energy of an electron in the first Bohr orbit of He^(+) .

The potential energy of an electron in the second Bohr's orbit of the He^(+) ion having total energy -3.4 eV is:-

If the potential energy of the electron in the first allowed orbit in hydrogen atom is E : its

If the potential energy of the electron in the first allowed orbit in hydrogen atom is E : its

The ratio of the difference in energy between the first and the second and the third Bohr orbit is

In the hydrogen atom, the energies corresponding to first, second and third orbits are given by E_1 = -13.6 eV, E_2 = -3.5eV, E_3 = -1.5 eV. If the atom emits a photon of energy 12.1 eV, in a transition, then the corresponding change in the angular momentum is given by