Question

What is Snell's law for reflection and refraction?

Answer 1

Snell's law:

1. A ray changes its direction when it goes from one refractive index media to another refractive index medium in order to take the shortest path across a system.
2. Whenever a light ray is bounced back by some angle across a barrier along its course, we describe the light beam however is reflected. This is referred to as light reflection.
3. Whenever a light beam travels from one medium towards another, it deviates somewhat from its course. This deviation is determined by the medium through which the light is traveling. This is referred to as light refraction.

Mathematically, snell's law can be represented as:

${\mathrm{n}}_1{\mathrm{Sin\theta }}_1={\mathrm{n}}_2{\mathrm{Sin\theta }}_2$

Here,

${\mathrm{n}}_1$ is the incident index.

${\mathrm{n}}_2$ is the refracted index.

${\mathrm{\theta }}_1$ is the incident angle.

${\mathrm{\theta }}_2$ is the refracted angle.