Skip to content
WorkZen
Academy
Home
All Trades
My Progress
en
English
EN
Français
FR
Español
ES
Menu
Home
All Trades
My Progress
Search certifications...
en
English
EN
Français
FR
Español
ES
Academy
Electrical
FOA CFOT (Certified Fiber Optic Technician)
Fiber Optic Fundamentals & Light Theory
Knowledge Check
Fiber Optic Fundamentals & Light Theory
Knowledge Check
Knowledge Check
1 / 9
For total internal reflection to occur in an optical fiber, what must be true about the core compared to the cladding?
A
The core must have a lower refractive index than the cladding
B
The core must have a higher refractive index than the cladding
C
The core must have a higher attenuation coefficient than the cladding
D
The core and cladding must have identical refractive indices
Check Answer
Back to lessons
Next module: Fiber Types & Classifications
Next module: