(in addition to the equations, present your reasoning in sentences with actual nouns and verbs)- (write units for every value that you write neat).
problem six: a beam of light travels through a fiberoptic “cable” with index of refraction = 1.51. it is typical that the fiber is surrounded by a special “cladding” which allows additional protective (but ordinary and cheap) plastic material on the very outside. this cable has cladding with index of refraction of 1.21. explain (derive? ) the requirements for total internal reflection, including the critical angle. at what angle of incidence does total internal reflection begin. include a clear diagram of the effect for this fiber optic system