Question

33. The critical angle for refraction from glass to
air is 30° and that from water to air is 37⁰. Find the
critical angle for refraction from glass to water.​

Answer 1

Explanation:

The Critical Angle Derivation

For the water-air boundary, the critical angle is 48.6-degrees. For the crown glass-water boundary, the critical angle is 61.0-degrees.