A ray originates in water

PHYSICS · Subjective · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction

Problem

(n=1.33)

, strikes a plane glass slab

(n=1.50)

of parallel faces and finally emerges into air

(n=1.00)

. If the emergent ray makes an angle of

40^{\circ}

with the normal in air, determine the angle of incidence of the ray in water.