55. On the surface of the metal falls radiation with a wavelength of 280 nm. When a retarding voltage photocurrent ceases. If you change the wavelength of the radiation in the 20 nm-retaining capacity had to be increased by 0.34 V. Determine the charge of the electron, Planck's constant, and considering the speed of light known.

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