Physics - Modern Physics Question with Solution | TestHub

Photoelectrons are emitted from a photosensitive surface for the light of wavelengths ${\lambda }_1=360\mathrm{nm}$ and ${\lambda }_2=600\mathrm{nm}.$ What is the ratio of work functions for lights of wavelength ${}^{\prime }{\lambda }_1{}^{\prime }$ to ${\lambda }_2{}^{\prime }$?