Photons & Photoelectric effect - 3 | Early Quantum Theory
General Chemistry 1 - Photons & Photoelectric effect - 3
The threshold frequency of copper is ν0 = 1.08 x 1015 s-1.
Calculate the kinetic energy of the electrons ejected from the surface of copper by radiation of wavelength 150 nm.
Ek = hν - hν0 = h (ν - ν0)
and ν = c / λ = 2.00 x 1015 s-1
Ek = (6.626 x 10-34) x (2.00 x 1015 - 1.08 x 1015) = 6.10 x 10-19 J.