A photosensitive surface is illuminated with both blue and violet light. The light to cause the most electrons

Question

a.blue

b.violet

c. both eject the same number of electrons

d. not enough info

Answer 1

the number of electrons is proportional to the intensity of the light (which is not given).  The maximum kinetic energy of the emitted electrons is proportional to the frequency of the light.

So, if the question is "most energetic electrons?" then the answer is (b)... but if the question is literally "the most electrons" then (d) because we are not told the intensity of either light source.

Answer 2

d.  You'd need to know the number of photons.  And something about the impact of frequency on the likelihood of a photon popping off an electron--which probably isn't large, but not zero either.