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In an optical fibre ,the refractive inde...

In an optical fibre ,the refractive index of the core material is

A

equal to R.I of the cladding material

B

less than that of the cladding material

C

more than that of the cladding material

D

negligible as compared to that of the cladding material .

Text Solution

Verified by Experts

The correct Answer is:
C
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