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Q86) Which of the following statements is/ are true with respect to 'Li-Fi'?

1. It is wireless mode of data transmission.

2. Range of transmission is higher for Wi-Fi compared to Li-Fi.

3. It is slower than the current Wi-Fi technology



A

a) Only 1

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B

b) Only 1 and 2

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C

c) Only 1 and 3

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D
d) All of the above
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Solution

The correct option is C

b) Only 1 and 2


Answer 86: B
Explanation: Until now, wireless data was facilitated by Bluetooth (for low-speed, short distance wireless communication,) cellular
signals (wide range 3G, and soon 4G etc.) or Wi-Fi (broadband wireless within rooms, buildings and open areas). Recent
developments are pointing to a new-generation technology that uses LED light to transmit data known as Li-Fi (Light-Fidelity). Its
speeds will between 10 and 100 times faster than current-generation Wi-Fi. Transmission range of this technology is limited compared
to a radio frequency based technologies like Wi-Fi.

Science and Technology

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