Question

the angle of refraction for critical angle is​

Answer 1

Answer:

90-degrees

Explanation:

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:

90 °degree

Explanation:

when the angel of incidence in water reaches a certain critical value.