Question

The Numerical aperture of a fiber describes the __________ characteristics.

• A. Light scattering
• B. Light collection
• C. Light dispersion
• D. Light polarisation

Hint:

Numerical Aperture is directly related to light gathering capacity. Remember its relation with refractive indices of core and cladding.

Answer 1

The Correct Option is B

The numerical aperture (NA) of an optical fiber describes its ability to collect light and guides it within the core. It measures how much light the fiber can capture, and this light gathering ability is related to the angle of acceptance and refractive indices of the fiber core and cladding.