CBQ Physics Unit 13 Snell’s Law Total Internal Reflection.

A glass fibre has an index of refraction of n1 = 1.5. Assume the cladding of the fibre has an index of n2 = 1.0.

A] Using Snell’s Law, derive the equation for total internal reflection (often called the critical angle).

B] Solve the equation for the maximum angle as measured from the fibre optic axis which satisfies total internal reflection.