A) S1 and S2
B) S2 and S3
C) S3 and S4
D) S2, S3, S4 and S5
Correct Answer: D
Solution :
(i) The optical fibres are used to transmit light signal from one place to another without any practical loss in the intensity of light signal. (ii) Optical fibre is made of a thin glass core surrounded by a glass coating. (iii) It works on the principle of total internal reflection.You need to login to perform this action.
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