With reference to Visible Light Communication (VLC) technology, which of the following statements are correct? 1. VLC uses electromagnetic spectrum wavelengths of 375 to 780 nm 2. VLC is known as long - range optical wireless communication 3. VLC can transmit large amounts of data faster than Bluetooth 4. VLC has no electromagnetic interference Select the correct answer using the code given below:

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YESPYQ · Accepted Answer

Correct answer: 1, 3 and 4 only. Visible Light Communication (VLC) uses visible light for data communication. Optical wireless communications methods include VLC as a subset. Because light-producing equipment (such as indoor/outdoor lamps, TVs, traffic signs, commercial displays, and car headlights/taillights) are utilised everywhere, VLC can be employed as a communications channel for ubiquitous computing. Statement 1 is correct: Visible Light Communication (VLC) operates within the visible light spectrum which ranges from approximately 375 nm (violet) to 780 nm (red). VLC uses light-emitting diodes (LEDs) to transmit data by modulating light intensity. Statement 2 is incorrect: VLC is considered a short-range communication technology due to the limitations of light propagation. It is effective over short distances such as within a room or confined space and is not designed for long-range communication like radio frequency (RF) technologies. Statement 3 is correct: VLC has the potential to transmit data at very high speeds often exceeding the data rates of Bluetooth. VLC can achieve

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