Question

A horizontal ray of light with a significant UV component is incident right at the center of the face of a flint glass prism in the shape of an equilateral triangle. The prism sits on a horizontal surface. The faces of the prism are 20.0 cm in length. The index of refraction of the glass is n = 1.70 for red light (~700 nm) and n = 1.95 for blue light (~400 nm).

Does the blue light (400 nm) reach the far side of the prism? What is the angular width of the light rays (they from a spectrum) inside the prism material and again after emerging from the other surface back into the air?

Answer 1

Solution in the uploaded image