The answer explains the resolution of two headlights, the practical limit for the eye, and the telescope mirror diameter calculation.
Resolution of Two Headlights: The maximum distance at which the eye can resolve two headlights depends on the pupil diameter. With a pupil diameter of 0.40 cm and headlights 1.3 m apart, the maximum distance can be calculated.
Practical Limit for the Eye: Calculating the practical limit for the eye, the greatest possible distance a car can be from you for you to resolve its two headlights is determined.
Telescope Mirror Diameter: To see small details on the Moon from a distance, the minimum diameter mirror on a telescope needed is calculated using the average wavelength of light received.
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