A source of laser light sends rays \( A B \) and \( A C \) toward two opposite walls of a hall. The light rays strike the walls at points B and C, as shown below. Wall What is the distance between the walls? 30 m 40 m 50 m

To calculate the distance between the walls using the information provided, we can utilize the properties of similar triangles or basic geometry principles relating to angles and distances, but we lack specific angles or distances between the points A, B, and C. Generally, spacing between walls in a hall where light rays are used can vary commonly based on architectural norms, typically around 30 m, 40 m, and occasionally up to 50 m in larger halls. Without additional angle or distance data, we can say that determining the right answer requires more information. But in a pinch, if the question is simply about the typical distances in such setups, one might lean towards the 40 m option, as it often accommodates practical layouts.