Single Answer MCQ
Q-00040266
Why are distant traffic signals typically red?
1
Easier to see in dim light
2
Least scattered by fog or smoke
3
More visible in direct sunlight
4
Color contrast with green
Answer and Solution
Answer
B. Least scattered by fog or smoke
Solution:
Red light is least scattered by particles in fog or smoke, making it more visible over long distances, hence its use in traffic signals.
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