The surfaces of all media are parallel. If the emerged ray CD is parallel to the incident ray AB, we must have:
A. μ1 = μ2
B. μ2 = μ3
C. μ3 = μ4
D. μ4 = μ1
Answer:D
The surfaces of all media are parallel. If the emerged ray CD is parallel to the incident ray AB, we must have:
A. μ1 = μ2 B. μ2 = μ3 C. μ3 = μ4 D. μ4 = μ1