Question

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

1. VLC uses electromagnetic spectrum wavelengths 375 to 780nm

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:

(a) 1, 2 and 3 only

(b) 1, 2 and 4 only

(c) 1, 3 and 4 only

(d) 2, 3 and 4 only

Answer 1

Correct option is (c) 1, 3 and 4 only

Li-Fi is a Visible Light Communications (VLC) system for running wireless communication. Li-Fi's main disadvantage: It is effective for short range only.