IB Physics SL E 1 5 Photon Energy Questions
Calculate SL photon energy, frequency and wavelength from spectra and energy-level transitions, selecting the correct relationship and units.
- Syllabus
- First assessment 2025
- Course
- Physics SL
- Level
- SL
Exam points
- calculate photon energy from frequency or wavelength using E=hf and E=hc/λ, with consistent units and significant figures
- compare photon energy, frequency and wavelength for different spectral lines or electron transitions
- use an energy-level difference to identify the emitted photon and determine its wavelength, frequency or energy
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IB Physics SL E 1 5 Photon Energy Questions 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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