UPSC Civil Services Prelims 2020
Question 51 of 70Science
With reference to Visible Light Communication (VLC) technology, which of the following statements are correct? 1. VLC uses electromagnetic spectrum wavelengths 375 to 780 nm. 2. VLC is known as long-range optical wireless. 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:
A1, 2 and 3 only
B1, 2 and 4 only
C1, 3 and 4 only
D2, 3 and 4 only
Correct Answer
The correct answer is hidden
Explanation
45 words hidden ... 2 is hidden because VLC is not generally characterized as long-range optical wireless; it is more appropriate for ... 42 words hidden