Question

Under what condition, the angle of refraction will be equal to the will be equal to the angle of incidence

Answer 1

Answer:

when angle of incidence is perpendicular

Answer 2

The critical angle is the angle of incidence where the angle of refraction is 90°. The light must travel from an optically more dense medium to an optically less dense medium. : When the angle of incidence is equal to the critical angle, the angle of refraction is equal to 90°.