Dual Nature of Radiation and Matter

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



1) Possible
2) Not possible
3) Data is incomplete
4) Depend upon the density of the surface
Solution: Explanation: No Explanation
Photon and Photoelectric Effect

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