Задача 50214.

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.

Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
If you have any questions to address, please. I´ll try to help.