As a countermeasure to drone swarm attack, which one among the following is the correct frequency range used for EM drone jamming?

Correct option is B

The correct answer is (b) Microwave frequency
Explanation:
• Most consumer and many military drones use RF links and GPS in microwave bands (e.g., 2.4 GHz, 5.8 GHz).
• EM jammers broadcast in microwave bands to disrupt command-and-control and GNSS reception.
• IR/visible light jamming cannot disrupt RF/GNSS communication links.
• Effective anti-drone jamming targets those microwave bands.
Information Booster:
• Typical jamming bands: 2.4 GHz, 5.8 GHz, and GNSS L1/L2 frequencies.
• Military systems may sweep or pulse across bands to counter adaptive links.
Additional Knowledge:
(a) Far-infrared — Used in thermal imaging, not RF jamming.
(c) Visible frequency — Light; unsuitable for RF comms jamming.
(d) Infrared frequency — For sensors/imaging, not primary comms disruption.