Light travels from air ( ) into a plastic layer ( ) and then immediately into water ( )
PHYSICS · Subjective · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
Light travels from air (n=1.00) into a plastic layer (n=1.50) and then immediately into water (n=1.33). The two interfaces are parallel and the incident angle in air is 40∘ relative to the normal. State whether the final ray in water is closer to, equal to, or farther from the normal compared with the initial incident ray in air, and briefly justify your answer in one sentence.