Physics
Wave optics for JEE Main & Advanced — interference, diffraction, and polarisation
How wave optics links electromagnetic waves to observable fringe and intensity patterns on both papers.
On JEE Main
Main tests Young's double slit fringe width and shift on inserting a slab, single slit diffraction minima, and Brewster's angle polarisation in single-correct MCQ format. Most questions have a clean numerical answer from one substitution.
On JEE Advanced
Advanced uses multi-correct and integer formats with coherence conditions, intensity distribution in double slit (not just fringe position), thin-film interference with multiple reflections, and combined diffraction-plus-interference patterns. Integer-type questions on path difference require exact phase arithmetic.
How to practise
Use PracticeJEE's Wave Optics topic after ray optics so concepts build sequentially.
Related chapters
Ready to practise this chapter?
Open Practice, choose Physics, then select this chapter in the topic list.
Go to Practice →