Multiple choice

Which wave is used in RADAR system for air craft navigation?

  1. Infrared wave

  2. Micro wave

  3. Gamma rays

  4. X-ray
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

RADAR (RAdio Detection And Ranging) systems use microwave frequencies, typically in the 1-100 GHz range. Microwaves have wavelengths suitable for detecting aircraft and weather patterns - long enough to penetrate clouds and precipitation, but short enough to provide good resolution. Infrared, gamma rays, and X-rays are not used in standard radar systems.

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