CAIE IGCSE Physics Visible-spectrum Colours
Practise ordering the seven visible colours by increasing wavelength or frequency and identify red or violet at the correct end of a dispersed spectrum.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- order increasing wavelength as violet, indigo, blue, green, yellow, orange, red
- reverse this sequence for increasing frequency and identify violet as shortest wavelength
3.2.4.2—Traditional seven colours of the question 1
Fig. 6.1 shows white light incident at point X on a glass prism.
Fig. 6.1
State the colour of light in the visible spectrum with the shortest wavelength.
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