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High beam headlights must be dimmed no less than:

1. From oncoming traffic
2. Of a vehicle being followed

A. 500 feet, 200 feet
B. 1000 feet, 300 feet
C. 2000 feet, 500 feet
D. 1500 feet, 400 feet

Answer :

Final answer:

The inquiry focuses on the physics of light, specifically determining the limitations of human visual acuity influenced by pupil diffraction, in understanding safe distances for observing car headlights and other visibility aspects.

Explanation:

The question revolves around the limit of the eye's acuity and how it relates to the diffraction by the pupil, specifically in the context of observing car headlights. For a pupil diameter of 3.00 mm and assuming an average wavelength of 550 nm, the physics of light and optical phenomena can be applied to calculate angles between just-resolvable points of light, the greatest possible distance a car can be from you while still resolving its headlights which are 1.3 m apart, and the distance between two just-resolvable points held at an arm's length.

These concepts help us understand not only how our eyes perceive details at various distances but also the engineering principles behind designing effective vehicle lighting and safe driving practices under different visibility conditions.

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