A ray in air strikes a -thick glass slab ( ) at an angle of with the normal

PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction

Problem

A ray in air strikes a 4 mm4\,\text{mm}-thick glass slab (n=1.60n = 1.60) at an angle of 30∘30^{\circ} with the normal. Immediately beyond the glass is a 6 mm6\,\text{mm}-thick plastic slab (n=1.45n = 1.45) whose faces are parallel to those of the glass. After passing through both slabs, the ray re-enters air. What is the lateral displacement between the original incident ray and the final emerging ray? (a) 0.65 mm0.65\,\text{mm} (b) 1.1 mm1.1\,\text{mm} (c) 0 mm0\,\text{mm} (d) 2.3 mm2.3\,\text{mm}

Related theory

Browse the problem library