A fish in water ( ) looks upward through a -thick glass panel ( ) into the air above

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

Problem

A fish in water (

n = 1.33

) looks upward through a

1.0\,\text{cm}

-thick glass panel (

n = 1.50

) into the air above. A light ray from the fish makes an angle of

25^{\circ}

with the normal as it enters the glass. Calculate the angle the ray makes with the normal once it emerges into air.