Question

The critical angle is maximum when light travels from

Answer 1

When the angle of incidence in water reaches a certain critical value, the refracted ray lies along the boundary, having an angle of refraction of 90-degrees. This angle of incidence is known as the critical angle; it is the largest angle of incidence for which refraction can still occur.

Answer 2

Answer:

glass to water

Explanation:

snell's law for critical angle:

sin(ic) ÷ sin90° = n₁ ÷ n₂

ic = sin⁻¹ (n₁ / n₂)

only when substituting the the refractive indexes of glass and water, the ic value is maximum.