Exam-style question
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What is the primary mechanism by which light is transmitted through optical fibres?.
- A.Reflection
- B.Refraction
- C.Diffraction
- D.Absorption
Model answer
What a good answer should say
- Reflection
Explanation
Why this works
Light is transmitted through optical fibres primarily by total internal reflection, which occurs when light hits the boundary of a medium at an angle greater than the critical angle, allowing it to be reflected back into the fibre.
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