Answer :
Final answer:
The distance at which class B lighting should be visible during the day is around 1,000 feet, determined by the concept of photons and pupil size. Therefore, option A) 1000 feet would be the correct choice.
Explanation:
Distance from which class B lighting should be visible during the day: According to the information provided, the visibility of lighting at a distance can be calculated using the concept of photons and pupil size. In this case, considering 500 photons per second entering the eye with a 3.00-mm diameter pupil, the distance would be approximately 1,000 feet. Therefore, option A) 1000 feet would be the correct choice.
Final answer:
Class B aviation lighting is designed to be visible from a minimum distance of 2000 feet during the day, to ensure safety in air travel.
Explanation:
The question asks about the distance from which Class B aviation lighting should be visible during daylight. Class B lighting, used on aircrafts for visibility, has different requirements for visibility in daytime compared to nighttime. Considering the standards set by international aviation authorities, the correct answer is C) 2000 feet. This is due to the inverse square law of light, meaning light intensity diminishes with the square of the distance from the source. So to ensure safety during air travel, Class B lighting is designed to be visible from at least 2000 feet away during daytime.
Learn more about Class B Aviation Lighting here:
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