With reference to ‘LiFi’, recently in the news, which of the following statements is/are correct?
- It uses light as the medium for high-speed data transmission.
- It is a wireless technology and is several times faster than ‘WiFi’.
Select the correct answer using the code given below.
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC IAS – 2016
1. **It uses light as the medium for high-speed data transmission:** LiFi utilizes Visible Light Communication (VLC) technology, where data is transmitted by modulating the intensity of light emitted by LEDs. The rapid flickering of LEDs is undetectable to the human eye but can be interpreted by a light sensor to decode data. This statement is correct.
2. **It is a wireless technology and is several times faster than ‘WiFi’:** LiFi is indeed a wireless technology, similar to WiFi, but uses light waves instead of radio waves. Due to the vast bandwidth available in the visible light spectrum compared to the radio spectrum, LiFi has the potential to offer significantly higher data transfer speeds than conventional WiFi. Lab tests and demonstrations have shown speeds multiple times faster than typical WiFi speeds. This statement is correct.