Задача 50066.

Light from a wavelength of 200 nm falls on a photocell with a lithium cathode. Find the smallest value of the delaying potential difference that must be applied to the photocell in order to stop the photocurrent. The work function of the electrons A=2.3 eV.

A detailed solution with a brief note of the condition, formulas and laws used in the solution, the derivation of the calculation formula and the answer.
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