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Q: The word radar is derived from?
  • A. Retro Diagnosis And Recognition
  • B. Radio Detection And Resolution
  • C. Rapid Detection And Reaction
  • D. Radio Detection And Ranging
Correct Answer: Option D - RADAR stands for Radio Detection and Ranging. It was invented in 1922 by Taylor and Leo Young.
D. RADAR stands for Radio Detection and Ranging. It was invented in 1922 by Taylor and Leo Young.

Explanations:

RADAR stands for Radio Detection and Ranging. It was invented in 1922 by Taylor and Leo Young.