IB Physics SL E.1.5 Photon energy Question Bank
Practise IB Physics SL/HL E.1.5 by applying photon energy concepts to exam-style physics questions.
- Syllabus
- First assessment 2025
- Course
- Physics SL
- Level
- SL
Exam points
- identify the relevant physical quantity, model or diagram
- apply the correct equation and units to the evidence
- justify the result using conservation laws, fields or energy relationships
E.1.5—Photon energy question 1
This question is about energy level transitions.
Some of the electron energy levels for a hydrogen atom are shown.
A hydrogen atom is excited to the -1.51 eV level.
State the energy in eV of the maximum wavelength photon emitted as the hydrogen atom returns to the ground state.
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