Question

A ray of light is obliquely incident on a
refracting face of a glass prism of refracting
angle 60°. If the angle of refraction at this face
is 26°, then find the angle of incidence. Find
the angle of emergence and the angle of
deviation, if u for glass is 1.5.​

Answer 1

A prism has an Apex angle and two equal angles at its base used that information and the geometry of the prism to find the angle of incidence with respect to three normal of the face where the light is incident now you know the angle of incidence and refraction and use you you can use snell's laws to compute the index of refraction of the class assume assume me yeah index equal to 1opposite to the next surface and use geometry to get the AVI internal and snell's laws against to get angle of refraction

I hope my answer will help you my dear friend