Einstein’s photoelectric equation
Kmax = hc/λ – φ = h υ - φ
Where
Kmax = Maximum kinetic energy of an electron that comes out due to collision with a photon
h = Planck constant 6.626*10^-34 J-s or 4.136*10^-15 eV-s
c = speed of light in vacuum 299,792,458 m/s or 3*10^8 m/s
λ = wave length of light represented by photon
φ = work function of the material from which the electron is coming
υ = frequency of the wave of light represented by photon
de Broglie wavelength equation for matter waves
λ = h/p
where
λ = wave length
h = Planck constant 6.626*10^-34 J-s or 4.136*10^-15 eV-s
p = momentum of the particle
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