A gas containining hydrogen-like ions, with atomic number `Z`, emits photons in
Channel: Doubtnut
Date: 2020-07-26

A gas containining hydrogen-like ions, with atomic number `Z`, emits photons in transition `n + 2 to n, where n = Z` These photons fall on a metallic plate and eject electrons having minimum de Broglie wavelength `lambda of 5 Å`. Find the value of `Z` , if the work function of metal is `4.2 eV`