How does light intensity affect stopping potential?

This means that the light source intensity does NOT increase the stopping voltage of the liberated electrons, but it does result in more electrons being stopped. The intensity of the light has no effect on the maximum kinetic energy of the photoelectrons. Therefore, the stopping voltage does not increase.

Why does the stopping potential increase with the frequency of the light but not with the intensity of the light?

Thus, its energy balance becomes (0−Ki)−e(−ΔVs)=0, so that Ki=eΔVs. In the presence of the stopping potential, the largest kinetic energy Kmax that a photoelectron can have is its initial kinetic energy, which it has at the surface of the photoelectrode.

How does stopping potential change with intensity?

Stopping potential does not depend on the intensity of incident light. On increasing intensity, the value of saturated current increases, whereas the stopping potential remains unchanged. Stopping potential does not depend on the intensity of incident radiation.

Why does stopping potential not depend on intensity?

Intensity gives a measure of number of photo electrons emitted, not a measure of how fast they move after emission. The stopping potential depends only on the frequency (or wavelength) of the light beam. It does not depend on the intensity. The frequency of the light beam determines the energy of the photons.

What is the effect of intensity on the stopping potential Mcq?

10. What is the effect of intensity on the stopping potential? Explanation: Changing the intensity of incident radiation does not affect the stopping potential. As the intensity increases, the number of photoelectrons ejected increases.

What is the effect of intensity of incident radiation on the stopping potential in photoelectric emission?

The stopping potential is more negative for higher frequencies of incident radiations. This means that greater the frequency of incident radiations, greater is the maximum kinetic energy of the photo electrons. That is why a greater retarding potential is required to stop them completely.

Why the stopping potential depends on the frequency of light?

The stopping potential does not depend on the intensity nor the number of incident photons but the stopping potential depends on the frequency of the incident light, the higher the frequency of the incident light higher the stopping potential or cut potential. It also depends on the kinetic energy of the electrons.

How does the stopping voltage depend on the intensity and frequency of the light?

The stopping voltage depends on the frequency of light incident on the cathode and therefore the maximum kinetic energy received by the electrons also depends on the frequency of the incident light. It is evident that the energy of light is proportional to its frequency.

Why does the stopping potential vary on varying the Colour of the light?

The shorter wavelength light produces higher stopping potentials. This validates the fact that higher energy frequencies (shorter wavelength) have more energy to give to the photoelectrons, thus the photoelectrons receive more energy from higher frequencies and are able to leave the metal with a higher kinetic energy.

How does the intensity of light affect the photoelectric current?

Electrons are emitted from the surface almost instantaneously, even at low light intensities. When a photoelectric effect is observed, the number of electrons ejected is proportional to the intensity of the incident light. The maximum kinetic energy of the photoelectrons increases with higher frequency light.

What is the effect of intensity of incident radiation on the stopping?

Greater the frequency of incident light, greater the value of negative potential required to stop the current. Hence, maximum energy of the emitted electron depends upon the frequency of light.

Does the stopping potential depend on the intensity of the incident light?

The stopping potential only depends on the incident frequency but not on the incident intensity. So for the given case, seemingly not only the intensity of incident light but also its frequency drop a certain limit, it’s the fact that the stopping potential decreases with decrease in frequency of incident radiation. Hope this helps.

What is the stopping potential of radiation?

Answer Wiki. The stopping potential is directly proportional to the frequency of incident radiation. The stopping potential only depends on the incident frequency but not on the incident intensity.

Does the intensity of a single photon decrease with distance?

Hence, when we view light as single photons, the intensity of a single photon does NOT decrease with distance.