Practice question

Which best explains why RADAR works well in fog and darkness while a camera may be limited?

  1. Cameras use radio waves and RADAR uses light
  2. Both fail equally in fog
  3. RADAR uses radio waves that penetrate fog and do not need light, while cameras rely on visible light
  4. RADAR needs bright sunlight

Answer: C — RADAR uses radio waves that penetrate fog and do not need light, while cameras rely on visible light

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