clem said:The probability of absorbing two photons is down by a factor of at least 100.
The photoelectric effect minimum frequency is the minimum frequency of light required to eject an electron from a metal surface. This frequency is different for each metal and is known as the threshold frequency.
The intensity of light does not affect the photoelectric effect minimum frequency. The minimum frequency is solely determined by the material and its work function, which is the minimum amount of energy needed to remove an electron from the surface of the material.
The photoelectric effect minimum frequency is significant because it was one of the key observations that led to the development of quantum mechanics. It also helped to prove the particle nature of light, as opposed to the previously accepted theory of light as a wave.
Yes, the photoelectric effect minimum frequency can be measured experimentally by gradually increasing the frequency of incident light on a metal surface until electrons are ejected. The minimum frequency can then be determined by finding the threshold frequency at which no electrons are ejected.
Einstein's theory of photons states that light is made up of particles, or photons, with discrete energy levels. The photoelectric effect minimum frequency supports this theory by showing that a minimum amount of energy (equal to the energy of a photon) is needed to eject an electron from a metal surface. This energy is directly proportional to the frequency of light, providing evidence for the quantized nature of light.