Physics for IGCSE & O level - Rays And Waves (Section 6 - No. 17)
What is the main reason for using optical fibers in telecommunications?
They are cheaper than copper wires.
They are less susceptible to interference.
They can carry more signals with less attenuation.
They transmit radio waves more efficiently.
Giải thích
Optical fibres are less susceptible to interference and can carry more signals with less attenuation.