Question

For what condition does the angle of refraction be equal to the angle of incidence?

Answer 1

Explanation:

If both the media are having the same refractive index, then angle of incidence and angle of refraction are same. If the incident ray falls perpendicularly on the second medium, then the incident angle and refracted angle are same.

Answer 2

Answer:

when light reflected from a surface the angle of incident is always equal to reglaction