Q. Consider the following statements:
1.Li-Fi is a Visible Light Communication (VLC) technology that uses the electromagnetic spectrum between 375 to 780 nm.
2.It is more energy-efficient than Wi-Fi and is capable of transmitting data faster than Bluetooth.
3.Because it uses light, Li-Fi waves can easily penetrate opaque walls, ensuring connectivity across different rooms without additional routers.
Which of the statements given above are correct?
Answer: A
Notes:
Explanation:
- Statements 1 and 2 are correct: Li-Fi uses the visible light spectrum, is highly efficient, and offers high-speed bi-directional data transfer.
- Statement 3 is incorrect: Light is blocked by opaque objects. Unlike Wi-Fi (radio waves), Li-Fi cannot pass through walls, which provides high security but limited range.
