Q. The cladding material of optical fibre has refractive index
A) Greater than that of core
B) Infinity
C) Equal of that of core
D) Less than that of core
Explanation
(d) 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 $\mu_{2} < \mu_{1},$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.