Total Internal Reflection and Optical Fibers
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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?

  • 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?

  • The same
  • Twice as fast
  • About 30% faster
  • About 30% slower (correct)
  • 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?

    <p>Flexibility and resistance to water damage</p> Signup and view all the answers

    What causes light signals to undergo multiple total internal reflections along their path through the core of an optical fiber?

    <p>Different refractive indices between core and cladding</p> Signup and view all the answers

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