Monochromatic light (that is, light of a single wavelength) is to be absorbed by a sheet of photographic film and thus recorded on the film. Photon absorption will occur if the photon energy equals or exceeds 0.6 eV, the smallest amount of energy needed to dissociate an AgBr 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?

Modern Physics
3rd Edition
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Chapter3: The Quantum Theroy Of Light
Section: Chapter Questions
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Monochromatic light (that is, light of a single wavelength) is to
be absorbed by a sheet of photographic film and thus recorded on
the film. Photon absorption will occur if the photon energy equals
or exceeds 0.6 eV, the smallest amount of energy needed to dissociate
an AgBr 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?

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