Question:
Light of wavelength 400 nm strikes a clean surface of
Last updated: 8/2/2022
Light of wavelength 400 nm strikes a clean surface of metallic Cs in vacuum and ejects an electron having a kinetic energy of 1.54 x 10-19 J. What is the de Broglie wavelength of this electron? O 1.25 nm O 1290 nm O 579 nm 4.72 x 1015 nm