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Does the frequency of incident radiation affect the stopping potential or saturation current or both?

Posted on September 2, 2022 by Author

Does the frequency of incident radiation affect the stopping potential or saturation current or both?

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. For a given intensity of radiation, the stopping potential depends on the frequency.

Does frequency affect saturation current?

The saturation current depends on the intensity of light, not on frequency. Hence no matter how much is the frequency for the same intensity of light, the saturation photocurrent will be same.

How does frequency affect stopping potential?

An increase in frequency of the incident light increases the kinetic energy of the emitted electrons, so greater retarding potential is required to stop them completely. This means that work done by stopping potential must just be equal to maximum kinetic energy of an electron.

What is the effect of frequency of incident radiation and stopping potential?

The energy of the emitted electrons depends on the frequency of the incident radiations. The stopping potential is more negative for higher frequencies of incident radiation.

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What is the effect of frequency of incident radiation?

This implies that greater the frequency of the incident radiation, greater is the maximum kinetic energy of the photoelectrons and hence greater is the retarding potential required to stop such electrons completely. Thus frequency only limits the kinetic energy of the emitted photon.

How does stopping potential of a photosensitive material vary with the intensity of incident radiation?

The stopping potential does not change with the radiation intensity because the kinetic energy of photoelectrons (see Equation 6.3. 4) does not depend on the radiation intensity.

Why does a saturation current occur?

When the voltage is increased up to a certain level, every electron that gets released is able to reach the other electrode, but as the number of electrons getting released is constant, current too becomes constant (saturation current) and no further increase in voltage will cause increase in current.

Why does current saturates in photoelectric effect?

The frequency and intensity of the incident light are kept constant. Saturation current implies that all the photoelectrons emitted by the emitter are immediately collected by the anode. …

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How does frequency affect photoelectric current?

Since the current is proportional to the average velocity of the electrons, the current will increase if the average velocity of the electrons is greater. Therefore, if we increase the frequency of the incident light, the photoelectric current will increase.

What is the effect of frequency on photoelectric current?

Experiments showed that increasing the light frequency increased the kinetic energy of the photoelectrons, and increasing the light amplitude increased the current.

How does retarding potential vary with the frequency of light causing photoelectric effect?

4. How does retarding potential vary with the frequency of light causing photoelectric effect? Clarification: The stopping potential is directly proportional to the frequency of light. Hence, the stopping potential increases with an increase in the frequency of the incident 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.

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