c) Draw a labelled diagram of an optical fibre and show how light propagated through the
optical fibre using this phenomenon.
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light must be travel from optically denser to optically rarer medium
the angle of incidence is the denser medium must be greater than the critical angle for the two media.
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Explanation:
Optical fiber:
Optical fibers are coated with a thin layer of a material of lower refractive index.
When the image is given below:
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