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Q.

Which of the following waves are used in RADAR systems for aircraft navigation?

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a

X-rays

b

Infrared rays

c

Ultraviolet rays

d

Microwaves

answer is B.

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Detailed Solution

λMicrowaves >λIRrays >>λUVrays >λXrays 

Hence, microwaves are less energetic electromagnetic waves, which are used in RADAR system for aircraft navigation.

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