Total Internal Reflection (TIR) in Physics
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Questions and Answers

What is total internal reflection (TIR)?

  • When waves arriving at the interface from one medium to another are refracted into the second medium
  • When waves arriving at the interface from one medium to another are absorbed by the second medium
  • When waves arriving at the interface from one medium to another are completely reflected back into the first medium (correct)
  • When waves arriving at the interface from one medium to another are scattered in both media
  • In which scenario does total internal reflection occur?

  • When waves are incident at a right angle on the interface and the second medium has a lower wave speed than the first
  • When waves are incident at a right angle on the interface and the first medium has a lower wave speed than the second
  • When waves are incident at a sufficiently oblique angle on the interface and the first medium has a higher wave speed than the second
  • When waves are incident at a sufficiently oblique angle on the interface and the second medium has a higher wave speed than the first (correct)
  • What happens when waves are refracted from a medium of lower propagation speed to a medium of higher propagation speed?

  • The waves undergo total internal reflection
  • The angle of refraction is less than the angle of incidence
  • There is no change in the angle of refraction compared to the angle of incidence
  • The angle of refraction is greater than the angle of incidence (correct)
  • How is refraction generally accompanied?

    <p>By a change in the wave's speed and direction</p> Signup and view all the answers

    In which types of waves does total internal reflection occur?

    <p>Electromagnetic waves such as light and microwaves, and other types of waves including sound and water waves</p> Signup and view all the answers

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