Final answer:
Two spotlights intersecting to produce a brighter light exemplifies the wave model of light through constructive interference, where light waves superimpose, increasing overall brightness, supporting concepts like polarization, diffraction, and interference that characterize wave behavior in light.
Step-by-step explanation:
The phenomenon where the light appears brighter where two spotlights intersect supports the wave model of light because it demonstrates constructive interference. This occurs when the crests of two or more light waves align and superimpose to form a resultant wave of greater amplitude, resulting in increased brightness at the intersection point. Such interference patterns are a hallmark of wave behavior and can't be explained by the particle model of light. The concept is analogous to Young's double-slit experiment, which showed that light can produce a pattern of bright and dark fringes due to interference, vividly demonstrating its wave properties.
According to the wave model of light, when two waves intersect, they undergo superposition, which can result in constructive interference, enhancing the light's intensity, or destructive interference, reducing it. Polarization, diffraction, and interference are all phenomena that further substantiate light's wave characteristics.