Para una fibra óptica con índice n1=1,5 y una cubierta de índice n2=1,4 ¿cuál es su apertura numérica?

For an optical fiber with index n1 = 1.5 and a cover with index n2 = 1.4, what is its numerical aperture?

Read these lines from beowulf.often scyld scefing seized mead-benches from enemytroops, from many a clan, he terrified warriors, even thoughfirst he was found a waif, best explains why the author includes this information in theexposition? a. to emphasize that a hero must learn to be fierceb. to remember the famous story of a popular heroc. to express sadness about losing the old heroesd. to see whether people still respect the old heroes