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UPSC Prelims 2024 Paper-I 📅 16 Jun, 2024

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
Result Summary
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APEDIA

UPSC Prelims
2024 • 16 Jun, 2024 • Paper-I
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?
Correct Answer
Only two
Science & Tech: Technology Applications.Technology: Radar.Details: Radars are successfully utilized for two of these activities. Doppler weather radars are exte......
💡 Analysis & Explanation
Science & Tech
Technology Applications.
Technology
Radar.
Details
Radars are successfully utilized for two of these activities. Doppler weather radars are extensively used to monitor precipitation (2). Small harmonic radars are attached to insects, birds, or small mammals to physically track their migration patterns (3). However, radar relies on bouncing radio waves and cannot identify the specific chemical composition of narcotics (1), which requires technologies like ion mobility spectrometry or X-ray backscatter.