Question
If an optical cable has an index of refraction of $1.5,$ how long will it take a signal to travel between two points on opposite coasts of the United States separated by a distance of $5000 \mathrm{km} ?$
Step 1
Step 1: The speed of light in a medium is given by the formula: \[v = \frac{c}{n}\] where \(v\) is the speed of light in the medium, \(c\) is the speed of light in vacuum, and \(n\) is the index of refraction of the medium. Show more…
Show all steps
Your feedback will help us improve your experience
Sanjeev Kumar and 101 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Data are carried by pulses of light through long, transparent fibers -fiber-optic cables. Long lengths of fiber carry signals $100 \mathrm{km}$ between amplifier stations. How long does it take a signal to travel this distance if the index of refraction of the fiber is $1.45 ?$
If it takes light 5 ns ( 1 nanosecond $=10^{-9}$ s) to travel 1 m in an optical cable, what is the index of refraction of the cable?
Components of some computers communicate with each other through optical fibers having an index of refraction $n=1.55 .$ What time in nanoseconds is required for a signal to travel 0.200 m through such a fiber?
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD