0 votes 0 votes The critical angle of an optical fiber is given by __________ where n1 is refractive index of medium 1 and n2 is the refractive index of medium 2 a) $sin^{-1} $(n2/n1) b) $sin^{-1} $(n1/n2) c) $sin^{-1} $(n2*n1) d) $sin^{-1} $ n2 Computer Networks isro-ece isro2011-ece computer-networks + – sh!va asked Feb 28, 2017 • edited Mar 10, 2019 by Naveen Kumar 3 sh!va 299 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.