In modern communication, use of optical fiber is increased for sending information. The reason behind this being, the speed of light is more than the speed of electron. Optical fiber used in communication systems works on which principle ?
C
Total internal reflection
Correct option is D. Total internal reflection
The optical fibre is a device which works on the principle of total internal reflection by which light signals can be transmitted from one place to another with negligible loss of energy.
$$\therefore$$ Correct Option is D.