Question

During the operation of a laser, as photons interacts with atoms inside the laser the photons________

double their energy

lose energy to collisions

double their wavelength

create "clones" of themselves

Answer 1

when the photon of optimum energy interacts with the electron, electron excites to the higher energy level state, and when it loses energy to come back to the normal state it emits a photon thereby creating a clone of the photon itself.

hence option (d) is correct.