GENERAL KNOWLEDGE

GK

GENERAL SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A radar that detects the presence of an enemy aircraft uses -
A
Sound waves
B
Radio waves
C
Electric waves
D
Ultrasonic waves
Explanation: 

Detailed explanation-1: -Microwaves are less energetic electromagnetic waves which are used in radar system for aircraft navigation.

Detailed explanation-2: -Radar is a radiolocation system that uses radio waves to determine the distance (ranging), angle (azimuth), and radial velocity of objects relative to the site. It is used to detect and track aircraft, ships, spacecraft, guided missiles, and motor vehicles, and map weather formations, and terrain.

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