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Light strikes a sodium surface, causing photoelectric emission. The stopping potential for the ejected electrons is 3.2 V, and the work function of sodium is 2.2 eV. What is the wavelength of the incident light?
True false questions on physics
When a high-power laser is used in the Earth's atmosphere, the electric field associated with the laser beam can ionize the air, What laser beam intensity will produce such a field
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