Question

What is the law of refraction of light?

Hint:

Snell's law governs the bending of light when it passes from one medium to another.

Answer 1

The laws of refraction of light state that:
1. The incident ray, the refracted ray, and the normal to the interface of two media lie in the same plane.
2. The ratio of the sine of the angle of incidence (\( i \)) to the sine of the angle of refraction (\( r \)) is a constant, known as Snell’s law:
\[ \frac{\sin i}{\sin r} = n \] where \( n \) is the refractive index of the second medium with respect to the first.