The frequency and work function of an inciden | vedclass

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(C) The photoelectric effect occurs only when the energy of the incident photon is greater than or equal to the work function of the metal.The energy

Vedclass · Accepted Answer

$
u \ge 
u_0$

Vedclass · Answer

(C) The photoelectric effect occurs only when the energy of the incident photon is greater than or equal to the work function of the metal.The energy of an incident photon is given by $E = h
u$,where $h$ is Planck's constant and $
u$ is the frequency.The work function $\phi_0$ is related to the threshold frequency $
u_0$ by the equation $\phi_0 = h
u_0$.For the emission of photoelectrons,the condition is $E \ge \phi_0$.Substituting the values,we get $h
u \ge h
u_0$,which simplifies to $
u \ge 
u_0$.Therefore,the necessary condition for the emission of photoelectrons is $
u \ge 
u_0$.

The frequency and work function of an incident photon are $\nu$ and $\phi_0$. If $\nu_0$ is the threshold frequency,then the necessary condition for the emission of photoelectrons is:

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