Question

write the materials to find out refractive index of prism .what is necessity of graph in this experiment ?​

Answer 1

To find the refractive index n, of a glass prism of angle 60° (A) with the angle of minimum deviation as D, we use the following formulae;

n = sin ( (A+D)/2) ÷ sin (A/2)

In our case D will be 40° A will be 60° Therefore.

n= sin (100/2)÷ sin (60/2)

≈ 1.53.