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Question
Radar is used to
Options:
A .  receive signal from radio receivers.
B .  locate geostationary satellites.
C .  detect and locate distant objects.
D .  locate submerged submarines.
Answer: Option C
Answer: (c)Radar (Radio Detection And Ranging) is an object-detection system that uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.

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