Find the velocity of photoelectrons liberated by electromagnetic radiation of wavelength `lambda=18.0nm` from stationary `He^(+)` ions in the ground state.

Suppose the energy liberated in the in the recombination of a hole-electron pair is converted into electromagnetic radiation.If the maximum wavelength emmited is 820nm,What is the band gap?

Suppose the energy liberated in the in the recombination of a hole-electron pair is converted into electromagnetic radiation.If the maximum wavelength emmited is 820nm,What is the band gap?

Suppose the energy liberated in the in the recombination of a hole-electron pair is converted into electromagnetic radiation.If the maximum wavelength emmited is 820nm,What is the band gap?

Find the photoelectric thresholdfor zinc and the maximum velocity of photoelectrons liberated form its surface by electromagnetic radiation with wavelength 250 nm .

Ground state energy of H-atom is (-E_(1)) ,t he velocity of photoelectrons emitted when photon of energy E_(2) strikes stationary Li^(2+) ion in ground state will be:

Ground state energy of H-atom is (-E_(1)) ,t he velocity of photoelectrons emitted when photon of energy E_(2) strikes stationary Li^(2+) ion in ground state will be:

Ground state energy of H-atom is (E_(1)) ,t he velocity of photoelectrons emitted when photon of energy E_(2) strikes stationary Li^(2+) ion in ground state will be: