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IB Physics HL E 2 8 Hl Photon Wavelength Increase Questions

Explain HL Compton wavelength increases by tracking photon energy loss, electron recoil and the relation E=hc/λ.

Syllabus
First assessment 2025
Course
Physics HL
Level
HL

Exam points

  • explain why a scattered photon has lower energy and longer wavelength after transferring energy to an electron
  • apply E=hc/λ and c=fλ to compare incident and scattered photon energy, wavelength and frequency
  • use energy and momentum transfer in Compton scattering to interpret wavelength-ratio and frequency-ratio questions

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Study E.2.8 (HL)—Photon wavelength increase conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Physics HL E 2 8 Hl Photon Wavelength Increase Questions question 1

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Figure for Question IB Physics HL E 2 8 Hl Photon Wavelength Increase Questions question 1 — IB Physics HL

Outline why the wavelength of the scattered photon is longer than that of the incident photon.

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