Question

photoelectrons emitted by a surface have maximum KE 4*10 -9 J what is the stopping potential for photoemission from the surface for incident radiation​

Answer 1

Answer:

Above the threshold frequency, the maximum kinetic  energy of the emitted photoelectron depends on the frequency of the incident light, but is independent of the intensity of the incident light

Answer 2

Answer:

photoelectrons emitted by a surface have maximum KE 4*10 -9 J what is the stopping potential for photoemission from the surface for incident radiation

The answer is wavelength