Help with modern physics question.?

Color is related with the wavelength that is related with the frequency, obeying the following equation c=wavelength*frequency, being c the speed of light in vacuum. The speed is the same for all electromagnetic radiation. The energy of a photon obeys the equation E=Planck constant*frequency, so as higher the frequency is the higher the energy is, and the energy after the threshold frequency only changes the kinetic ENERGY of the emitted electron, so what determines the number of electrons emitted is intensity of the light, if you consider the photon a particle, it's like a collision of two bodies, the more bodies the higher quantity of electrons is emitted.