Question

the incident ray,reflected ray,refracted ray are perpendicular to each when an light incident at an angle i. calculate the refractive index of the medium and the critical angle.​

Answer 1

Answer:

The normal line divides the angle between the incident ray and the reflected ray into two equal angles. The angle between the incident ray and the normal is known as the angle of incidence. The angle between the reflected ray and the normal is known as the angle of reflection.

Explanation:

If light travels enters into a substance with a lower refractive index (such as from water into air) it speeds up. The light bends away from the normal line. A higher refractive index shows that light will slow down and change direction more as it enters the substance.