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Question
Optical fibre communication uses the principle of ______.
Options
light path reversibility
least action
total internal reflection
light scattering
MCQ
Fill in the Blanks
Solution
Optical fibre communication uses the principle of total internal reflection.
Explanation:
Here, refracting index of cladding < refracting index of core.
Hence, when i > c, TIR takes place.
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