What happens to photoelectric current IF frequency is increased?
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 happens if the frequency of the incident light is increased?
An increase in the frequency of the incident light increase the velocity with which photoelectron is ejected. The increase in frequency v of incident light increase the energy of the incident photon.
Does intensity increase as frequency increases?
There are many ways of defining the intensity of light, but if you are just measuring the energy per unit time per unit area then yes increasing the frequency while keeping the number of photons constant will increase the intensity.
Does photoelectric current depend on frequency of incident light?
Current is not dependent on the frequency of photons. Frequency of photons is only related to the kinetic energy. Thus the current remains the same.
How does intensity affect photoelectric current?
How does the intensity affect the photoelectric current? Hence, as the intensity increases, the number of photoelectrons ejected increases and hence photoelectric current increases.
Does photoelectric effect depends on intensity?
When a photoelectric effect is observed, the number of electrons ejected is proportional to the intensity of the incident light. However, the maximum kinetic energy (KEMAX) of the photoelectrons is independent of the light intensity.
How does frequency affect intensity of light?
If the only thing one changes is the frequency of the photons, then doubling the frequency will double the intensity. Alternately, doubling only the emission rate, or focusing the photons to hit half the area will also double the intensity.
How does the intensity affect the photoelectric current?
Hence, as the intensity increases, the number of photoelectrons ejected increases and hence photoelectric current increases. It was considered that when a photon of incident radiation collides with an electron, it transfers its energy to the electron, thus causing photoelectric emission.
How does photoelectric current depend intensity?
(b) The number of electrons emitted per second (i.e. the electric current) is independent of frequency and increases linearly with the light intensity. The number of electrons ejected therefore depends upon the number of photons, i.e. the intensity of the light.
What is the effect of frequency and intensity of light on photoelectric current?
Maximum kinetic energy of photoelectrons depend on frequency and independent of intensity When the intensity of incident light wave on metal surface was higher then it posses more energy and the ejected electrons achieve higher kinetic energy. The energy of photon (particle of light) only depends on frequency (E =hʋ).