- #1
nothing0
- 2
- 0
a light with frequency 'v' can't excite electrons from a metal surface if the threshold frequency of the metal is greater than the frequency of the wave( the light,electromagnetic radiation)so why don't the energies of the photons add up together and then excite the electron in the surface of the metal (mean even a very intense light with the same frequency can't do it if it has less frequency intense light means lots of photons can't this photons co-operate?)