JAMB - Physics (1989 - No. 31)
When a radiation strikes a metal surface, electrons may be ejected from the metal. The maximum kinetic energy which may be acquired by an ejected electron depend on the
intensity of the radiation
source of the radiation
wavelength of the radiation
detection device of the electron
Giải thích
The maximum kinetic energy of an emitted electrons is independent of the intensity of the incident light but proportional to the frequency ( wavelength) of incident light. increasing the intensity of light only increases the number of photo-electrons