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Get Answers to all your Questions
Consider the figure given for photoemission. How would you reconcile with momentum-conservation? Note light (photons) have momentum in a different direction than the emitted electrons.
Answers (1)
There is a transfer of momentum to the atoms on the metal surface when the photons strike the surface. This also results in a decrease in speed of the photons. Thus, the momentum of photons is transferred to the nucleus and electrons of the metal.
Although the direction of emission of electrons is opposite to that of photons, the total momentum transferred by them is equal.
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