What retarding potential is necessary to stop the emission of photoelectrons, if the work function of the target material is 1.24 eV and wavelength of incident light is 436 nm? (Take hc=1240eVnm) if the work function of the target material is 1.24 eV and wavelength of incident light is 436 nm? (Take hc=1240eVnm) What retarding [...]