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(D) According to Einstein's photoelectric equation,the maximum kinetic energy $(K_{max})$ of emitted photoelectrons is given by $K_{max} = h
u - \Phi

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remains same.

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(D) According to Einstein's photoelectric equation,the maximum kinetic energy $(K_{max})$ of emitted photoelectrons is given by $K_{max} = h
u - \Phi$,where $h$ is Planck's constant,$
u$ is the frequency of incident radiation,and $\Phi$ is the work function of the metal.Since the stopping potential $(V_{s})$ is related to the maximum kinetic energy by the relation $eV_{s} = K_{max}$,we have $eV_{s} = h
u - \Phi$.This equation shows that the stopping potential $(V_{s})$ depends only on the frequency $(
u)$ of the incident radiation and the work function $(\Phi)$ of the metal surface.Intensity of light affects the number of photons incident per unit area per unit time,which in turn affects the number of photoelectrons emitted (photoelectric current),but it does not affect the maximum kinetic energy of the individual photoelectrons.Therefore,if the frequency $(
u)$ is kept constant,the stopping potential $(V_{s})$ remains the same regardless of changes in the intensity of the incident light.

If the frequency of incident radiation is kept constant and the experiment is repeated by using incident light of different intensities,then the stopping potential $(V_{s})$

Similar Questions

In the photoelectric effect,electrons are emitted from a metal surface only when the incident light has a certain minimum . . . . . . .

Assertion : Kinetic energy of photoelectrons emitted by a photosensitive surface depends upon the intensity of incident photon.
Reason : The ejection of electrons from a metallic surface is possible with a frequency of incident photon below the threshold frequency.

The work function of aluminium is $4.2 \ eV$. If two photons, each of energy $3.5 \ eV$, strike an electron of aluminium, then the emission of electrons will be:

$A$ point source of light is used in an experiment on the photoelectric effect. Which of the following curves best represents the variation of photocurrent $(i)$ with distance $(d)$ of the source from the emitter?

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