In an isosceles prism of angle 45, it is found that when the angle of incidence is same as the prism angle, the emergent ray grazes the emergent surface. Find the refractive index of the material In an isosceles prism of angle 45 it is found that when the angle of incidence is same as the prism angle the emergent ray grazes the emergent surface. Find the refractive index of the material October 6, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related