Question 29
Refraction of LightThe operation of an optical fibre is based on the principle of
- A.dispersion of light
- B.interference of light
- C.refraction of light
- D.polarization of light.
Show the answer and explanation
Answer: C (refraction of light)
Explanation
Optical fibres work by total internal reflection, which happens when light inside the glass meets the boundary at more than the critical angle; of the choices only refraction of light is related.