Identify the correct statement according to Einstein's picture of photoelectric effect:

Maximum Kinetic Energy of electrons depends linearly on frequency of incident radiation.

Einstein’s Explanation of the Photoelectric Effect

• The strength of the photoelectric current depends upon the intensity of incident radiation, and it should be higher than the threshold frequency.

• The reverse stopping potential was the photo-current stop. It is independent of the intensity of incident radiation.

  $eV_s = KE_{max} = h\nu - \phi$

• Photoelectric current does not occur if the frequency of the incident radiation is below the threshold frequency. A metallic strip, when exposed to light or sun, will not be able to produce the Photoelectric effect unless the frequency is greater than the threshold value.

• The photoelectric effect is an instantaneous process. As soon as light hits the surface, the electrons of the metal come out.