Light in air strikes a plane parallel glass slab ( ) at an angle of incidence and…

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

Problem

Light in air strikes a plane parallel glass slab (

n=1.50

) at an angle of incidence

30^{\circ}

and then enters water (

n=1.33

) on the other side. What is the angle that the emergent ray makes with the normal in the water? (a)

34^{\circ}

(b)

30^{\circ}

(c)

22^{\circ}

(d)

19^{\circ}