[" (b) Work function of aluminium is "4.2e" V.If two photons each "],[" of energy "2.5e" V are incident on its surface,will the emission "],[" takes place? Justify your answer."]

Work function of aluminium is 4.2 eV.If two photons, each of energy 2.5 eV, are incident on it surface, will the emission of electrons take place? Justify your answer.

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

The work function of copper is 4.0 eV. If two photons, each of energy 2.5 eV strike with some electrons of copper, will the emission be possible?

The energy required to remove an electron from an aluminium surface is 4.2 eV. If two photons, each of energy 3.0 eV, strike an electron of aluminium, the emission of photoelectrons will