K1 and K2 be the maximum kinetic energies of photoelectrons emitted from a surface of a given material for the light of wavelength λ1 and λ2, respectively. If λ1=2λ2 then the work function of material is given by:
Held on 8 Apr 2026 · Verified 6 Jul 2026.
K2+2K1
2K2−K1
K1−2K2
K2−2K1
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