Assertion : Kinetic energy of photoelectrons | vedclass

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(D) The kinetic energy of emitted photoelectrons depends on the frequency of the incident photon, not the intensity. Intensity only determines the num

Vedclass · Accepted Answer

If both the Assertion and Reason are incorrect.

Vedclass · Answer

(D) The kinetic energy of emitted photoelectrons depends on the frequency of the incident photon, not the intensity. Intensity only determines the number of photoelectrons emitted per unit time.According to Einstein's photoelectric equation, $K_{max} = h
u - \Phi_0$, where $
u$ is the frequency of incident light and $\Phi_0$ is the work function.Furthermore, the ejection of electrons from a metallic surface is only possible if the frequency of the incident photon is greater than or equal to the threshold frequency $(
u \ge 
u_0)$.Therefore, both the Assertion and the Reason are incorrect.

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.

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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.