A light beam is travelling from Region 1 to Region 4 (refer figure). The refractive indices in Regions 1, 2, 3, and 4 are n0 , n0/2, n0/6, n0/8, respectively. The angle of incidence theta 2 3% A light beam is travelling from Region 1 to Region 4 (refer figure). The refractive indices in Regions [...]