How does one explain the emission of electrons from a photosensitive surface with the help of Einstein's equation?

How does one explain the emission of electrons from a photosenstive surface with the help of Einstein's equation?

(i) How does one explain the emission of electron from a photosensitive surface with te help of Einstein's photoelectric equation ? (ii) The work function of the following metals is given : Na = 2.75 eV, K = 2.3 eV, Mo = 4.17 eV and Ni = 5.15 eV . Which of these metals will not cause photoelectric emission for radiation of wavelength 3300 Å from a laser source placed 1 m aways from these metals ? What happens if the laser source is brought nearer and placed 50 cm away ?

The number of photoelectrons emitted from a photosensitive surface

The velocity of electrons given out by a photosensitive surface depends on

Explain wurtz reaction with the help of a chemical equation.