What type of waves does Li-Fi utilize for wireless connectivity?

a) Radio waves
b) Infrared waves
c) Microwaves
d) Light waves


LiFi (light fidelity) is a bidirectional wireless system that transmits data via LED or infrared light. It was first unveiled in 2011 and, unlike wifi, which uses radio frequency, LiFi technology only needs a light source with a chip to transmit an internet signal through light waves.
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