The work function of aluminium is 4.2 eV. If | vedclass

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(B) The work function $(\Phi)$ of aluminium is $4.2 \ eV$. According to the photoelectric effect, an electron is emitted only if the energy of an inci

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Not possible

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(B) The work function $(\Phi)$ of aluminium is $4.2 \ eV$. According to the photoelectric effect, an electron is emitted only if the energy of an incident photon $(E)$ is greater than or equal to the work function $(\Phi)$ of the metal surface. In this case, the energy of each incident photon is $3.5 \ eV$, which is less than the work function $(3.5 \ eV Since the photoelectric effect is a single-photon process where one photon interacts with one electron, the absorption of two photons by a single electron is an extremely rare event and does not contribute to the standard photoelectric emission process. Therefore, the emission of electrons is not possible.

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:

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