Question

A ray of light incident on an equilateral glass prism propagates parallel to the base line of the prism inside it. Draw the Ray diagram and find the angle of incidence of the ray, given the refractive index of the material of the glass prism is $\sqrt{3}$.

Answer 1

Angle of prism (A)=60

Angle of refraction , r=A/2

Now using Snell`s law ,

$\frac{{\mu }_g}{{\mu }_i}=\frac{sin\left(i\right)}{sin\left(r\right)}$

$sin\left(i\right)=\sqrt{3}/2$

i=60