WAEC Physics 2018 Theory — Question 3
Question 3 of 27 from the West African Examinations Council (WAEC) Physics 2018 Theory paper, with the correct answer and a full explanation.
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2. State three materials used for making optical fibres.
Model answer
Silicon dioxide (silica glass), sapphire, and chalcogenide glass (plastic/polycarbonate fibres are also used in some applications).
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