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Questions and Answers
What happens when a ray of light traveling from a denser medium to a rarer medium encounters an angle of incidence greater than the critical angle?
What happens when a ray of light traveling from a denser medium to a rarer medium encounters an angle of incidence greater than the critical angle?
- It slows down
- It changes color
- It gets absorbed by the rarer medium
- It gets reflected instead of refracted (correct)
What is the speed of light in the core of an optical fiber compared to its speed in vacuum?
What is the speed of light in the core of an optical fiber compared to its speed in vacuum?
- The same
- Twice as fast
- About 30% faster
- About 30% slower (correct)
What is the purpose of repeater stations in optical fiber communication?
What is the purpose of repeater stations in optical fiber communication?
- To convert light signals into electrical signals
- To boost the speed of light signals (correct)
- To amplify the light signals
- To change the direction of light signals
What allows optical fibers to be used for long distance transmission of communication signals?
What allows optical fibers to be used for long distance transmission of communication signals?
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What causes light signals to undergo multiple total internal reflections along their path through the core of an optical fiber?
What causes light signals to undergo multiple total internal reflections along their path through the core of an optical fiber?
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