Multiple choice

During fog, the visibility usually drops down to below

  1. 5 Km

  2. 3 Km

  3. 2 Km

  4. 1 Km
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fog is defined by visibility reduction below 1 kilometer. During fog conditions, water droplets in the air significantly restrict horizontal visibility, often reducing it to less than 1000 meters and creating hazardous conditions for aviation and transportation.

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