In the fall of radiation with a wavelength lambda on th

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In the fall of radiation with a wavelength lambda on the plate of metal with a photoelectric threshold lambda 1 = 0.35 microns, the retarding voltage to photoelectrons equal U1 = 1,4 V, and when falling on a plate with red border lambda 2 = 0.45 it is equal to U2. Determine U2.

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Task 50214. Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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