UPSC 2020: 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 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:

The correct answer is option (c): 1, 3 and 4 only. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.

This question was asked in UPSC CSE Prelims 2020, GS Paper 1, as Question 39. It falls under Science & Technology > Computer & Information Technology.

This question is rated "moderate". It requires sound conceptual understanding of the topic.

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