Bluetooth uses low power radio waves in which frequency range?

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Multiple Choice

Bluetooth uses low power radio waves in which frequency range?

Bluetooth operates in the 2.4 GHz ISM band, meaning radio waves around 2.4 billion cycles per second. The range used is 2.4 to 2.485 GHz, which is why that option is the correct one. The other choices misstate the units: Hz, kHz, and MHz would place the signal at frequencies far too low for Bluetooth to achieve its intended data rates and range. Staying in the 2.4–2.485 GHz region also aligns with this unlicensed band that many consumer devices share, often with techniques like frequency hopping to minimize interference.

Bluetooth operates in the 2.4 GHz ISM band, meaning radio waves around 2.4 billion cycles per second. The range used is 2.4 to 2.485 GHz, which is why that option is the correct one. The other choices misstate the units: Hz, kHz, and MHz would place the signal at frequencies far too low for Bluetooth to achieve its intended data rates and range. Staying in the 2.4–2.485 GHz region also aligns with this unlicensed band that many consumer devices share, often with techniques like frequency hopping to minimize interference.

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