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The phenomenon by which light travels in an optical fibres is:

Correct answer: C. Total internal reflection

  • A. Reflection
  • B. Refraction
  • C. Total internal reflection
  • D. Transmission

Explanation

Total internal reflection (TIR) is the optical phenomenon in which waves, such as light, are completely reflected under certain conditions when they arrive at the boundary between one medium and another, such as air and water.

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About Optics

Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.

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