question 1 Light strikes a metal surface, causing photoelectric emission. The stopping potential for the ejected electro

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question 1 Light strikes a metal surface, causing photoelectric emission. The stopping potential for the ejected electro

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question 1
Light strikes a metal surface, causing photoelectric emission.
The stopping potential for the ejected electrons
is 6.9 V, and the work function of the metal
is 2.1 eV. What is the wavelength of the incident
light?
question 2
The wavelength of the yellow spectral emission line of sodium is
590 nm. At what kinetic energy would an electron have that
wavelength as its de Broglie wavelength?
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