9. Quantum Mechanics
Photoelectric Effect
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A metal with a threshold frequency of 2.15 x 1015 s-1 emits an electron with a velocity of 7.03 x 106 m/s when radiation of 4.88 x 1015 s-1 strikes the metal's surface. Calculate the mass of the electron.
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An ultraviolet photon with a wavelength of 320 nm strikes a metal surface. The emitted electron has a kinetic energy of 3.0 x 10-2 eV. What is the binding energy of the electron in kJ/mol? 1 electron volt (eV) = 1.602 x 10-19 J.
2763views7rank4comments - Scelta multiplaWhich best describes the photoelectric effect?1656views
- Scelta multiplaWhich of the following is true about the photoelectric effect?1667views1rank
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What is the threshold frequency ν0 of cesium?
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What is the threshold frequency for sodium metal if a photon with frequency 6.66 × 1014 s−1 ejects an electron with 7.74 × 10−20 J kinetic energy? Will the photoelectric effect be observed if sodium is exposed to orange light?
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A ray of red light has a wavelength of about 7.00×10−7 m. Will exposure to red light cause electrons to be emitted from cesium?
983views - Domanda apertaWhat is the threshold frequency ν0 of cesium2759views