The phenomenon used in optical fibre for transmission of light energy is

ಉತ್ತರ ತೋರಿಸು ಮತ್ತು ವಿವರಣೆ

ಉತ್ತರ: (A) Total internal reflection

ವಿವರಣೆ

Optical fibres guide light by repeated total internal reflection at the core–cladding boundary (core has the higher refractive index).