Monochromatic light (that is, light of a single wavelength) is to be absorbed by a sheet of photographic find and thus recorded on the film. Photon absorption will occur if the photon energy equals or exceeds 0.6eV, the smallest amount of energy needed to dissociate an Ag Br molecule in the film.
(a) What is the greatest wavelength of light that can be recorded by the film?
(b) In what region of the electromagnetic spectrum is this wavelength located?