Question

write law of refraction

Answer 1

1. the incident Ray, refracted Ray and normal Ray lies on the same plane.
2. the ratio of sine of angle of incidence to sine of angle of refraction is a constant. this constant is called refractive index

Answer 2

1. INCIDENT RAY ,REFLECTED RAY & NORMAL AT THE POINT OF INCIDENT ALL LIE IN THE SAME PLAIN
2. ANGLE OF INCIDENT IS EQUAL TO THE ANGLE OF REFLECTION