Photoelectric Effect Work Function
Surface of certain metal is first illuminated with light of wavelength λ
1 = 350
nm and then, by light of wavelength λ
2 = 540
nm. It is found that the maximum speed of the photoelectrons in the two cases differ by a factor of 2. The work function of the metal (in eV) is close to :
(
Energy of photon =
1240 λ ( in nm)
eV
)