Q. 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?
(a) Only one
(b) Only two
(c) All three
(d) None
Correct answer: (b) Only two
Question from UPSC Prelims 2024 GS Paper
Explanation:
1. Identification of narcotics on passengers at airports or in aircraft:
Radars are not typically used for this purpose. Drug detection at airports usually involves other technologies like X-ray machines, ion scanners, or trained dogs.
2. Monitoring of precipitation:
Radars are commonly used for this purpose. Weather radars are a key tool in meteorology for detecting and monitoring precipitation.
3. Tracking the migration of animals:
Radars can indeed be used for this. Some types of radar systems are employed to track bird migrations, insect movements, and even bat activities.
The correct answer is (b) Only two.