Textbooks say that by measuring the stopping potential V(adsbygoogle = window.adsbygoogle || []).push({}); _{0}, we can determine the maximum kinetic energy with which electrons leave the cathode: eV_{0}= K_{max}

However, as I know, when we apply the stopping potential, the electrons will decelerate and radiate parts of their energies. Thus, the stopping potential measured V will be less than V_{0}in the equation above.

Could anyone please explain this problem?

Thank you very much.

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# Radiation in photoelectric effect.

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