Question

Which part of optical fibre has a higher refractive index:

• A. Core
• B. Cladding
• C. Seath
• D. Both Cladding and Seath

Hint:

The core of the optical fibre has a higher refractive index than the cladding, which is crucial for light confinement and total internal reflection.

Answer 1

The Correct Option is B

In an optical fibre, the core has a higher refractive index than the cladding. This difference in refractive indices causes total internal reflection, which allows light to be guided through the core of the fibre. The cladding has a lower refractive index to ensure that light remains confined within the core.
Final Answer: \[ \boxed{\text{(2) Cladding}} \]