9. Quantum Mechanics
Photoelectric Effect
9. Quantum Mechanics
Photoelectric Effect - Video Tutorials & Practice Problems
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Get a 10 bullets summary of the topicWhat happens when light strikes the surface of a metal? The Photoelectric Effect can help to explain that.
Examining the Photoelectric Effect
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Photoelectric Effect
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Photoelectric Effect
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Photoelectric Effect Example 1
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Photoelectric Effect
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Photoelectric Effect Example 2
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Problem
ProblemA 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.
A
6.97 x 10-22 kg
B
4.98 x 10-31 kg
C
2.96 x 10-21 kg
D
7.32 x 10-32 kg
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Problem
ProblemAn 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.
A
320 kJ/mol
B
370 kJ/mol
C
450 kJ/mol
D
405 kJ/mol
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PRACTICE PROBLEMS AND ACTIVITIES (20)
- Which type of electromagnetic radiation will cause the greatest number of electrons to be ejected from zinc me...
- Einstein's 1905 paper on the photoelectric effect was the first important application of Planck's quantum hypo...
- Molybdenum metal must absorb radiation with an energy higher than 7.22 * 10-19 J ('energy threshold') before i...
- Molybdenum metal must absorb radiation with an energy higher than 7.22 * 10-19 J ('energy threshold') before ...
- Molybdenum metal must absorb radiation with an energy higher than 7.22 * 10-19 J ('energy threshold') before i...
- Sketch the interference pattern that results from the diffraction of electrons passing through two closely spa...
- The work function of cesium metal is 188 kJ/mol, which corresponds to light with a wavelength of 637 nm. Which...
- The work function of calcium metal is kJ/mol, which corresponds to light with a wavelength of 432 nm. Which of...
- The work function of silver metal is 436 kJ/mol. What frequency of light is needed to eject electrons from a s...
- Cesium metal is frequently used in photoelectric cells because the amount of energy necessary to eject electro...
- An argon ion laser puts out 5.0 W of continuous power at a wavelength of 532 nm. The diameter of the laser bea...
- An X-ray photon of wavelength 0.989 nm strikes a surface. The emitted electron has a kinetic energy of 969 eV....
- The energy required to ionize sodium is 496 kJ/mol. What minimum frequency of light is required to ionize sodi...
- The amount of energy necessary to remove an electron from an atom is a quantity called the ionization energy, ...
- A minimum energy of 7.21 * 10-19 J is required to produce the photoelectric effect in chromium metal. (a) Wha...
- What is the threshold frequency ν0 of cesium?
- What is the threshold frequency for sodium metal if a photon with frequency 6.66 × 1014 s−1 ejects an electron...
- A ray of red light has a wavelength of about 7.00×10−7 m. Will exposure to red light cause electrons to be emi...
- What is the threshold frequency ν0 of cesium
- What is the threshold frequency ν0 of cesium?