THE PRACTICE STUDIO
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PRACTICE / Photoelectric effect
Voltage that stops the fastest electrons
Photons of energy 4.5 eV illuminate a metal with work function 2.0 eV.
Find the stopping-potential magnitude.
Organize the givens & assumptions
- Ephoton = 4.5 eV
- φ = 2.0 eV
Single-photon photoemission from a uniform surface; negligible contact-potential corrections; photon energy exceeds the work function.
- A
- B
- C
- D
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