A photographic film is coated with a silver bromide layer.
Question:

A photographic film is coated with a silver bromide layer. When light falls on this film, silver bromide molecules dissociate and the film records the light there. A minimum of $0.6 \mathrm{eV}$ is needed to dissociate a silver bromide molecule. Find the maximum wavelength of light that can be recorded by the film.

Solution:

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