Consider the following activities : 1. Identification of narcotics on passengers at airports or in aircraft 2. Monitoring of precipitation 3. Tracking the migration of animals In how many of the above activities can the radars be used?
- AOnly one
- BOnly twoCorrect
- CAll three
- DNone
Explanation
Radars can be used in the following activities:
-
Identification of narcotics on passengers at airports or in aircraft: No. Airports use X-ray scanners, ion mobility spectrometry, and sniffer dogs for narcotics detection, not radar.
-
Monitoring of precipitation: Yes. Weather radar is the standard tool for monitoring precipitation.
-
Tracking the migration of animals: Yes. Radar ornithology is an established field for tracking bird and animal migration.
Therefore, radars can be used in only two activities (2 and 3).
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