Introduction

The Angle of the Deviation is the same angle, which is equal to the difference between the angle of incidence and the angle of refraction of a ray of pght that is passing through the surface. This surface is between one medium and another of a different refractive index. In that case, a prism is considered as the minimum deviation position, in the time when the angle of incidence at the first surface, equals the angle of emergence, which is at the second surface.

Aim

This experiment aims to determine a prism s the angle of minimum deviation by just plotting a graph between the two angles of incidence and deviation.

Required material

There are a few required things, that are mandatory to experiment. They are, a drawing board, a white sheet of paper is mandatory, the whole process is dependent on a prism, so a prism (Gao et al. 2018). Some other instruments will be required for help, such as drawing pins, pencils, half-meter scale, office pins, protractor and lastly graph papers.

Theory

The angle through which the emergent ray deviates from a direction of the incident ray, is referred to as the angle of deviation, d. On the other hand the angle of incidence is the angle that is between the impact direction and a sopd surface(Gao et al. 2018).

When pght travels from one medium to another medium and results in a deviation of the emergent ray from that of the incident ray, the refraction happens. The refractive index of the material that is used in the prism is-

$$mathrm{n:=:frac{[frac{sin(A+Dm)}{2}]}{sin(frac{A}{2})}}$$

In which $mathrm{D_m}$ is referred to as the angle of minimum deviation and that A is denoted as the angle of prism.