Consider the following activities :
- Identification of narcotics on passengers at airports or in aircraft
- Monitoring of precipitation
- Tracking the migration of animals
In how many of the above activities can the radars be used ?
Only one
Only two
All three
None
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC IAS – 2024
1. Identification of narcotics on passengers at airports or in aircraft: Advanced radar-based scanners, particularly millimeter-wave scanners, are used in airport security for screening passengers. These scanners can detect concealed objects, including weapons and potentially other items like large quantities of narcotics, underneath clothing. So, radar can be used in this activity.
2. Monitoring of precipitation: Weather radar is a fundamental tool in meteorology used to detect, locate, and track precipitation (rain, snow, hail). It estimates the intensity and type of precipitation and predicts its movement. So, radar is used in this activity.
3. Tracking the migration of animals: Radar is widely used in biological research, particularly in ornithology and entomology, to study the migration patterns of birds and insects. Weather radar systems often detect large flocks of birds or insect swarms, and specialized biological radars are also used for more detailed tracking. So, radar can be used in this activity.
Since radar can be used in all three listed activities, the correct answer is “All three”.