Sahay Sir > Question Answers > MTG NEET Physics > Part 2 > Chapter 9 - Ray Optics > A ray of light passes through four transparent media with refractive index n1, n2 , n3 and n4 as shown. The surfaces of all media are parallel. If the emergent ray DE is parallel to incident ray AB, then
A ray of light passes through four transparent media with refractive index n1, n2 , n3 and n4 as shown. The surfaces of all media are parallel. If the emergent ray DE is parallel to incident ray AB, then