A) greater than that of core
B) infinity
C) equal to that of core
D) less than that of core
Correct Answer: D
Solution :
In optical fibre, the core (refractive index \[{{\mu }_{1}}\]) is surrounded by cladding (refractive index \[{{\mu }_{2}}\]) made up of transparent glass or plastic such that \[{{\mu }_{2}}<{{\mu }_{1}}\].
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