Q. Consider the following statements:
1.The Doppler Weather Radar (DWR) uses a type of radar that detects precipitation and calculates its intensity.
2.The DWR has the ability to detect hail.
3.DWR is a type of satellite radar that aims at providing weather information..
Which of the statements given above is/are correct?

[A] 1 only

[B] 1 and 2 only

[C] 2 only

[D] 1, 2 and 3

Answer: B
Notes:

Explanation –

Statement 1 and 2 are correct. DWR uses a type of radar that detects precipitation and calculates its intensity. The DWR can determine whether the precipitation is in form of rain, snowfall, or hail.

Statement 3 is incorrect. DWR is different from satellite radar. Satellite radar is designed to track orbital targets, like satellites. Satellites are also used to detect weather but those are only images that shows cloudy weathers, etc. whereas DWR is used to detect amount of precipitation and calculate its intensity. DWR is more precise than satellite images.

Source: PIB