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MMLU-Pro / 9909 / In a photoelectric effect experiment it is found that for a certain metal…

Problem

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

question

In a photoelectric effect experiment it is found that for a certain metal surface the kinetic energy of an electron ejected by blue light of wavelength 4.1 × 10^-7 m is 3.2×10^-19 J. (a) What is the work function of the electrons in the metal? (b) What is the longest wavelength of light that will eject electrons from this surface?

category

physics

options

  1. 1.2 × 10^-19 J, 1.15 × 10^-6 m
  2. 2.2 × 10^-19 J, 1.00 × 10^-6 m
  3. 1.6 × 10^-19 J, 1.25 × 10^-6 m
  4. 2.0 × 10^-19 J, 1.10 × 10^-6 m
  5. 1.4 × 10^-19 J, 1.45 × 10^-6 m
  6. 2.4 × 10^-19 J, 1.5 × 10^-6 m
  7. 1.5 × 10^-19 J, 1.40 × 10^-6 m
  8. 1.8 × 10^-19 J, 1.35 × 10^-6 m
  9. 1.9 × 10^-19 J, 1.30 × 10^-6 m
  10. 1.7 × 10^-19 J, 1.20 × 10^-6 m

src

stemez-Physics

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Source and history

upstream_id / Original problem ID
9909
task_id
41c0e078-f9b5-546c-824a-329dfcafb665
task_key
default--test--9909
task_revision_id
1
config / split
default / test

Official source

initial import