In sample of hydrogen atoms in ground state, electron make transition from ground state to particular
excited state, where path length is four times of debroglie wavelenght . Electrons make back transition to
the ground state prouducing all possible photons.
Debroglie wavelenght of electron which is emitted from the fianl excited dtate of above hydrogen sample, when photon of 1eV collide with it

In sample of hydrogen atoms in ground state, electron make transition from ground state to particular excited state, where path length is four times of debroglie wavelenght . Electrons make back transition to the ground state prouducing all possible photons. Ve,cocity of electron in fianal excited dtate in the above sample of hydrogen atom is

In a sample of H-atoms in ground state electrons make transition from ground state to a particular excited state where path length is 5 times de Broglie wavelength , electrons make back transition to the ground state producing all possible photons. If photon having 2nd highest energy of this sample can be used to excite the electron in a particular excited state of Li^(2+) ion then find the final excited state of Li^(2+) ion .

In a sample of H-atoms in ground state electrons make transition from ground state to a particular excited state where path length is 5 times de Broglie wavelength , electrons make back transition to the ground state producing all possible photons. If photon having 2nd highest energy of this sample can be used to excite the electron in a particular excited state of Li^(2+) ion then find the final excited state of Li^(2+) ion .

In a H like sample electrons make transition from 4th excited state to 1st state then

As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom //ion

As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom /ion

As an electron makes a transition from an excited state to the ground state of a hydrogen like atom/ion.

As an electron makes a transition from an excited state to the ground state of a hydrogen -like atom / ion

As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom /ion

As an electron makes a transition from an excited state to the ground state of hydrogen-like atom // ion: