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MMLU-Pro / 10352 / Photoelectrons of kinetic energy 2eVare emitted from a cesium surface; the work…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

Photoelectrons of kinetic energy 2eVare emitted from a cesium surface; the work function (orW_f) = 1.8eV. What is the longest wavelength of light which could have produced such emission?

category

physics

options

  1. 450 nm
  2. 350 nm
  3. 375 nm
  4. 327 nm
  5. 265 nm
  6. 300 nm
  7. 250 nm
  8. 410 nm
  9. 290 nm
  10. 395 nm

src

stemez-Optics

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Source and history

Official source

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