KCET 2018 Physics Solved Paper

In photoelectric effect, the maximum kinetic energy of emitted photoelectrons depends on the frequency of incident radiation. We have
KE=hv−ϕ
Where ϕ is work function, which is the minimum energy required to remove electrons from the metal plate; f is frequency of incident radiation; h is Planck’s constant.
Therefore, (KE)max∝f.