Question

A gas containing hydrogen like lons with atomic no Z, emits photons in transition n + 2 →
where n = Z These photons fall on a motallic plate and eject electrons having minimum
de-Broglie wavelength 2 of 5A" Find the value of Z' if the work function of metal is 4.2eV.​

Answer 1

Answer:

u can do it practice the same sums