Question 1 1 pts abc is an isosceles right-triangle prism in air. An incident ray is perpendicular to the ab side. The transmitted ray from the back side (bc) has an angle of a = 150 with the direction of the incident ray. What is the index of refraction of the prism? 45 CMedium 1 (n1= 1.2) and medium 2 (n2= 1.8) are two rectangular-shaped layers stacking together. An incident ray in medium 2 makes a right triangle with AB and BC; AB is the normal direction to the interface. If the height of AB is h = 1 m, what distance of BC will result in total internal reflection at the interface? medium 1 iA medium 2 B C