Intensity of light constantwhy rate of emission of electrons changes?

[samsool]

Intensity of light constant..why rate of emission of electrons changes??

Intensity of light constant..why rate of emission of electrons changes as frequency of the incident light increased??... is the rate increase or decrease??
help me.. thanks..

 

[jtbell]

Intensity of light constant

So the energy carried by the light per second stays constant.

..why rate of emission of electrons changes as frequency of the incident light increased??

As the frequency of the light increases, what happens to the energy of a single photon? What does this do to the number of photons carried by the light per second, in view of the first statement above?

 

[denian]

I can provide an explanation for why the rate of emission of electrons changes when the intensity of light is constant and the frequency of the incident light increases.

First, it is important to understand that the rate of emission of electrons refers to the number of electrons being emitted per unit time. This rate is determined by the energy of the incident light.

When the intensity of light is constant, it means that the number of photons (units of light energy) hitting the surface is consistent. However, as the frequency of the incident light increases, the energy of each photon also increases. This increase in energy can cause electrons in the material to absorb the photons and become excited, leading to the emission of more electrons.

In other words, as the frequency of the incident light increases, the energy of the photons increases, and more electrons are excited and emitted from the material. This leads to an increase in the rate of emission of electrons.

It is important to note that the rate of emission of electrons may not always increase with increasing frequency of light. This is because there is a threshold frequency, also known as the work function, which is the minimum energy required for an electron to be emitted from the material. If the frequency of the incident light is below this threshold, no electrons will be emitted regardless of the intensity of the light.

In summary, the rate of emission of electrons changes when the intensity of light is constant and the frequency of the incident light increases because the energy of the incident photons increases, causing more electrons to be excited and emitted from the material.