Hydrogen gas in the atomic state is excited to an energy level such that the electrostatic polential energy becomes `-3.02 eV`
Now, the photoelectric plate hoving W=4.6 eV is exposed to the emission spectra of this gas. Assuming all the transition of be possible, find the minimum de-Broglie wavelength of ejected photoelectrons.

Hydrogen gas in the atomic state is excited to an energy level such tht the electrostatic potential energy of H-atom becomes -1.7 eV . Now, a photoelectric plate having work function w=2.3 eV is exposed to the emission spectra of this gas. Assuming all the transitions to be possible, find the minimum de-Broglie wavelength of the ejected photoelectrons.

Hydrogen gas in the atomic state is excited to an energy level such tht the electrostatic potential energy of H-atom becomes -1.7 eV . Now, a photoelectric plate having work function w=2.3 eV is exposed to the emission spectra of this gas. Assuming all the transitions to be possible, find the minimum de-Broglie wavelength of the ejected photoelectrons.

An electron, in a hydrogen like atom , is in excited state. It has a total energy of -3.4 eV, find the de-Broglie wavelength of the electron.

An electron, in a hydrogen like atom , is in excited state. It has a total energy of -3.4 eV, find the de-Broglie wavelength of the electron.

An electron, in a hydrogen like atom , is in excited state. It has a total energy of -3.4 eV , find the de-Broglie wavelength of the electron.

A glass tube has Be^(+++) ions excited to their second excited state. The radiation coming out of this tube is incident on a metal plate having work function f = 5 eV . Find the minimum de-Broglie wavelength of emitted photoelectrons.

A photoelectric plate is initially exposed to a spectrum of hydrogen gas excited to second energy level. Late when the same photoelectric plate is exposed to a spectrum of some unknown hydrogen like gas, excited to second energy level. It is found that the de-Broglie wavelength of the photoelectrons now ejected has increased sqrt(6.1) times. For this new gas difference of energies of first Lyman line and Balmer series limit is found to be two times the ionization energy of the hydrogen atom is ground state. Detect the atom and determine the work function of the photoelectric plate.

If the total energy of an electron in a hydrogen atom in an exicted state is -3.4 eV , then the de- broglie wavelegth of the electron is :-