In the structure of fiber optic cable, the refractive index of core is always _______the refractive index of cladding.
A. Less than
B. Equal to
C. Greater than
D. None of the above
Answer:C
In the structure of fiber optic cable, the refractive index of core is always _______the refractive index of cladding.
A. Less than B. Equal to C. Greater than D. None of the above