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

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?

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.

Energy required to remove an electron from aluminium surface is 4.2 eV . If light of wavelength 2000 Å falls on the surface , the velocity of the fastest electron ejected from the surface will be

Energy required to remove an electron from aluminium surface is 4.3 V. If light of wavelength 2000 Å falls on the surface, the velocity of the fastest electron ejected from the surface will be

The work function of a metal is 6 eV. If two pho tons each having energy 4eV strike with the metal surface. will the emission be possible?

A : Work function of aluminium is 4.2 eV . Emission of electrons will be possible by two photons , each of 2.5 eV energy , striking the electron of aluminium . R : Energy of a photon can be less then the work function of the metal , for photoelectron emission .