Solving a problem in physics section 14 point 55 optics

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55. On the surface of lithium falls monochromatic light (λ = 310 nm). To stop the emission of electrons, it is necessary to apply a retention potential difference U is not less than 1.7 V. To determine the work function A.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)

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