The photoelectric equation is given by:(adsbygoogle = window.adsbygoogle || []).push({});

hf = hf_{0}+ 1/2mv^{2}where f is the frequency of the incident wave and f_{0}is the threshold frequency.

HERE, only the conservation of energy is taken into consideration and momentum conservation is neglected. Why is this approach justified? Suppose we take momentum conservation into consideration--how will the photoelectric equation be modified?

What qualitative changes will be introduced in the emerging electron?

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# Momentum conservation in photoelectric effect

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