Multiple choice technology

Blue tooth devices communicates using

  1. Radio waves

  2. Infra red

  3. UV rays

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bluetooth operates in the 2.4 GHz ISM band using radio waves. It does not use infrared (line-of-sight limitation) or UV rays (harmful, not used for short-range communication). Radio waves allow non-line-of-sight communication through walls and obstacles within the 10-100 meter range.

Keep practicing — related questions