GyanGramQuestion
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?
PRELIMS 2024 · SCIENCE & TECHNOLOGY
Consider the following activities: 1. Identification of narcotics on passengers at airpor…
Attempt this previous-year question. The correct option stays hidden until you choose.
Pick an option to check yourself.
• Correct Answer: B
• Weather radars (Doppler) detect precipitation by reflecting radio waves off water droplets.
• Wildlife radar systems track bird and animal migration patterns.
• Radars cannot identify chemical substances like narcotics; X-ray or millimeter-wave scanners are used for that.
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