Hydrogen gas in the atomic state is excited to an energy level such that the…
PHYSICS · Subjective · A Level · Physics · Particles and radiation · Particles and radiation
Problem
Hydrogen gas in the atomic state is excited to an energy level such that the electrostatic potential energy of the hydrogen atom becomes −1.7eV. A photoelectric plate with work function W=2.3eV is exposed to the emission spectrum of this gas. Assuming all transitions are possible, find the minimum de Broglie wavelength of the ejected photoelectrons.