Question

Which of the following is a possible application of fibre optics?

• A. Endoscopy
• B. High speed internet
• C. Radio, TV and Telephone signal
• D. All of above

Answer 1

The correct option is D All of above

Fibre optics is based on propagation of light (electromagnetic wave) through the optical fibre (medium) based on the principle of total internal reflection(TIR).

By selecting a material of proper refractive index and designing the value of $i_c$, allows us to send the light on any path using TIR.

By utilizing the technique of TIR, loss of energy is minimized and higher rate of transmission is achieved.

$\therefore$ Fibre optics find application in endoscopy (examination of internal organ), High speed internet and TV/Radio/Telephone signal transmission.

Why this question? Tips: Light is a type of electromagnetic wave. Thus, transmission of light and radio waves follow the same principle of reflection in TIR.