Q. The difference in the refractive index of the fiber core and fiber cladding in step-index fibers is typically
A) 0.01%
B) 1%
C) 10%
D) 25%
Explanation
(b) The percentage difference in the refractive indices of fibre core and fibre cladding in step index fibre
$= \frac{\mu_{1} - \mu_{2}}{\mu_{1}} \times 100 \approx 1\%$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.