gs1medium

Consider the following:

  1. 1.Bluetooth device
  2. 2.Cordless phone
  3. 3.Microwave oven
  4. 4.Wi-Fi device

Which of the above can operate between 2-4 and 2.5 GHz range of radio frequency band?

  1. A.1 and 2 only
  2. B.3 and 4 only
  3. C.1, 2 and 4 only
  4. D.1, 2, 3 and 4
▶ Answer & Explanation

Correct answer: D. 1, 2, 3 and 4

Bluetooth, Wi-Fi, and most cordless phones operate in the 2.4 GHz ISM band, which is a common unlicensed radio frequency. Microwave ovens also utilize magnetrons that generate electromagnetic radiation typically around 2.45 GHz for heating purposes. Therefore, all these devices operate within or overlap with the specified frequency range.

Source: UPSC gs1 2010

Practice this question with answer tracking

Track your performance, build spaced repetition reviews, and see your weak areas.

Start practising free →