The electrons are emitted in the photoelectric effect from a metal surface
Only if the frequency of the incident radiation is above a certain threshold value
Only if the temperature of the surface is high
At a rate that is independent of the nature of the metal
With a maximum velocity proportional to the frequency of the incident radiation
Kinetic energy with which the electrons are emitted from the metal surface due to photoelectric effect is
Write characteristic of photon or How photon of electromagnetic radiation can be represented ?
In a photo cell, the photo-electrons emission takes place
The light of two different frequencies whose photons have energies $3.8 \,eV$ and $1.4 \,eV$ respectively, illuminate a metallic surface whose work function is $0.6 \,eV$ successively. The ratio of maximum speeds of emitted electrons for the two frequencies respectivly will be