CourseCourseConceptConceptDocsDocuments

CAIE A-Level Physics A2 22.2 Photoelectric Effect Questions

Practise analysing photoelectric emission, threshold quantities, photon energy, work function, Einstein’s equation and graph effects of frequency and intensity.

Syllabus
2028–2030
Course
Physics 9702
Level
A2

Exam points

  • explain photoelectric emission and determine threshold conditions from frequency or wavelength
  • use photon energy and work function to explain the energy of emitted electrons
  • calculate or rearrange the Einstein photoelectric equation for maximum kinetic energy
  • interpret photoelectric graphs and distinguish frequency effects on electron energy from intensity effects on current

Covered syllabus points

22.2.1—Photoelectrons may be emitted from a metal surface when it is illuminated by22.2.2—The terms threshold frequency and threshold wavelength22.2.3—Photoelectric emission in terms of photon energy and work function energy22.2.4—Hf = Φ + 1/2 mvmax 222.2.5—Why the maximum kinetic energy of photoelectrons is independent of

No Questions Yet

Questions will appear here when available.