Final answer:
The maximum distance at which the eye can resolve two headlights depends on the pupil diameter and the distance between the headlights.
Step-by-step explanation:
The maximum distance at which the eye can resolve two headlights depends on the pupil diameter and the distance between the headlights.
The angle between two just-resolvable points of light can be calculated using the formula: angle = (1.22 * wavelength) / pupil diameter.
To find the maximum distance, we can use the formula: distance = (headlight distance) / tan(angle).
For example, if the pupil diameter is 0.40 cm and the distance between the headlights is 1.3 m, the maximum distance at which the eye can resolve the headlights is approximately 1860 meters.