IB skill practice

Analyse reflection, refraction, diffraction, and interference

Official-syllabus Physics skill catalogue entry. Seeded skills are activated only after exam-style question templates pass validation.

Paper 1, Paper 2 5 marks Difficulty 5

Double slit fringe spacing

In an interference setup from a music room resonance test, light of wavelength \(590\,\text{nm}\) passes through slits separated by \(0.32\,\text{mm}\). The screen is \(1.5\,\text{m}\) away. Calculate the fringe spacing. Enter the numerical result and choose the interpretation that matches the wave meaning.

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