gs1medium

With reference to visible light communication (VLC) technology, which of the following statements are correct?

  1. 1.VLC uses electromagnetic spectrum wavelengths 375 to 780nm
  2. 2.VLC is known as long-range optical wireless communication.
  3. 3.VLC can transmit large amounts of data faster than Bluetooth
  4. 4.VLC has no electromagnetic interference

Select the correct answer using the code given below

  1. A.1, 2 and 3 only
  2. B.1, 2 and 4 only
  3. C.1, 3 and 4 only
  4. D.4 only
▶ Answer & Explanation

Correct answer: C. 1, 3 and 4 only

Visible Light Communication (VLC) utilizes the visible light spectrum, typically ranging from 375 to 780 nanometers, for data transmission. This technology offers high bandwidth and speeds that can exceed those of conventional wireless technologies like Bluetooth. A significant advantage of VLC is its lack of electromagnetic interference, as it operates within the visible light spectrum, making it suitable for environments where radio frequencies might be problematic. However, VLC is generally considered a short-range communication technology, not a long-range one.

Source: UPSC gs1 2020

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