The core of an optical fiber has an index of refraction of 1.33 , while the index of refraction of the cladding surrounding the core is 1.15 . What is the critical angle θc for total internal reflection at the core‑cladding interface?

You are waiting in line to use the diving board at your local pool.while watching people dive into the pool from the board,you realize that using a diving board to spring into the air before a dive is good example newton's third law of motion.explain how a diving board illustrated newton's law of motion