Use Snell's Law as given in class to solve for the angle of reflection and angle of refraction of a light ray that is incoming at an angle of 25 degrees to the normal at the air-glass interface.

A ray of white light traveling through air enters a triangular prism that has an index of refraction of 1.517 for the red end of the spectrum and 1.532 for the violet end and an apex angle of 61.5 degrees. If the ray has an angle of incidence of 44.8 degrees with respect to the normal of the interface boundary, what is the angular separation between the red and violet ends of the spectrum upon exiting the prism? Measure this in degrees to 2 decimal places.

A light ray traveling in air strikes the surface of a slab of glass at an angle of incidence of 50 degrees. Part of the light is rejected and part is refracted. Find the angle the refracted ray makes with respect to the normal to the air/glass interface.

The absolute index of refraction for a substance is 2.0. In this substance what is the critical angle to get total internal reflection/refraction for light incident on a boundary with air?  Note: speed of light in a vacuum is c = 3x108 m/s