Optical Fibre Basics
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Questions and Answers

What is the principle that optical fibres work on?

  • Diffraction
  • Total internal reflection (correct)
  • Reflection
  • Refraction

    • What is the phenomenon in which light is totally reflected from a denser-to-rarer medium boundary, at an angle greater than critical angle, known as?

  • Total internal reflection (correct)
  • Diffraction
  • Reflection
  • Refraction

    • When a light ray passes from rarer medium to denser medium, how is it bent?

  • Away from the normal
  • Toward the normal (correct)
  • Perpendicular to the normal
  • Parallel to the normal

    • What law relates the angles of incidence and refraction to the refractive indices of the two media?

    <p>$n_1\sin\theta_1 = n_2\sin\theta_2$</p> Signup and view all the answers

    In which direction is a light ray bent when it passes from a denser medium to a rarer medium?

    <p>Toward the normal</p> Signup and view all the answers

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