B
To transmit light signals over long distances using total internal reflection
C
To measure temperature
D
To amplify sound waves
Correct Answer: Option B — To transmit light signals over long distances using total internal reflection
Explanation:
Optical fibres transmit light signals over long distances using total internal reflection within a glass or plastic fibre and are the backbo...
Optical fibres transmit light signals over long distances using total internal reflection within a glass or plastic fibre and are the backbone of modern high-speed internet communications.