Answer to the Question no 01:
Merits of optical fiber
- Greater Bandwidth. Copper cables were originally designed for voice transmission and have a limited bandwidth.
- Faster Speeds.
- Longer Distances.
- Better Reliability.
- Thinner and Sturdier.
- More Flexibility for the Future.
- Lower Total Cost of Ownership.
Answer to question no 2:
ringμwater = μ water / μ ring = (sin ic ) / (sin r)
=1.32/2.45=sin ic / sin 90
ic =sin-1 (1.32/2.45)
ic=32.60°