Q>a ray of light is normally incident on one face of an equilateral glass prism.answer the following questions in respect to this:-
a) what is the angle of incidence on the first face of the prism?
b)what is the angle of refraction from the first face of the prism?
c)what will be the angle of incidence at the second face of the prism?
d) will the light ray suffer minimum deviation by the prism ?
explain with a proper diagram?