Headlight grime reduces efficiency by up to what percent?

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Multiple Choice

Headlight grime reduces efficiency by up to what percent?

Explanation:
Grime on headlight lenses blocks and diffuses light, so the beam reaching the road falls as dirt accumulates. In severe cases, this reduction can reach up to about 90 percent, meaning you’re seeing only about one-tenth of the light a clean lens would produce. Keeping lenses clean or restoring them returns most of that lost brightness and improves nighttime visibility. The smaller percentages reflect less severe grime, but the question is focusing on the maximum impact.

Grime on headlight lenses blocks and diffuses light, so the beam reaching the road falls as dirt accumulates. In severe cases, this reduction can reach up to about 90 percent, meaning you’re seeing only about one-tenth of the light a clean lens would produce. Keeping lenses clean or restoring them returns most of that lost brightness and improves nighttime visibility. The smaller percentages reflect less severe grime, but the question is focusing on the maximum impact.

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