The correct answer is Total Internal Reflection which is option A
All types of electromagnetic waves travel at the same time. When light travels from a vacuum into a material medium such as glass, its speed decreases but its frequency remains the same but its wavelength decreases.
The principle that explain how fiber optics can transmit data in the form of light pulses over large distances with little loss in signal strength is total internal reflection.
What is Total Internal Reflection ?
Total Internal Reflection is the reflection of an incident ray of light at the interface between the medium of incidence and another medium of lower refractive index when the angle of incidence in the denser medium exceeds the critical angle.
The two condition are
1. Light must travel from an optically more dense to an optically less dense medium
2. The angle of incidence in the denser medium must be greater than the critical angle.
Therefore, the correct answer is Total Internal Reflection.
Learn more about Total Internal Reflection here: https://brainly.com/question/13197033
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