Question

With reference to Visible Light Communication (VLC) technology, which of the following statements are correct?
I. VLC uses electromagnetic spectrum wavelengths 375 to 780 nm.
II. VLC is known as long-range optical wireless communication.
III. VLC can transmit large amounts of data faster than Bluetooth.
IV. VLC has no electromagnetic interference.

• A. Only I, II and III
• B. Only I, II and IV
• C. Only I, III and IV
• D. Only II and III

Hint:

When working with technical concepts, ensure to verify the correct properties, such as range and interference, to determine which statements are accurate.

Answer 1

The Correct Option is C

Lets analyze the statements:
Statement I: VLC uses electromagnetic spectrum wavelengths 375 to 780 nm.
This is correct. VLC uses the visible light spectrum, which spans from 375 nm to 780 nm. Statement II: VLC is known as long-range optical wireless communication.
This is incorrect. VLC typically works over shorter distances compared to other wireless communication technologies like Wi-Fi or Bluetooth, as it uses visible light. Its more suitable for short-range communication. Statement III: VLC can transmit large amounts of data faster than Bluetooth.
This is correct. VLC can transmit data at much higher speeds than Bluetooth, especially over short distances. Statement IV: VLC has no electromagnetic interference.
This is correct. VLC experiences less electromagnetic interference than traditional wireless communication methods like Wi-Fi, as it uses light instead of radio waves. However, VLC can still be affected by environmental factors such as ambient light. Thus, the correct answer is Option (3): Only I, III, and IV.