Light, when modeled as a ray, exhibits several key qualities: 1. Straight Line Propagation: Light travels in a straight line under normal conditions. This is the fundamental principle behind the ray model of light. When we draw light as a ray, we use a straight line with an arrow to represent its path. 2. Reflection: When light hits a smooth, reflective surface (like a mirror), it bounces off at the same angle at which it hit the surface. This is known as the law of reflection. 3. Refraction: When light passes from one medium to another (like from air to water), it changes direction. This bending of light is called refraction. 4. Absorption: Some materials can absorb light, converting it into other forms of energy like heat. The absorbed light does not pass through the material or bounce off it. 5. Transmission: Some materials allow light to pass through them. The amount of light that passes through depends on the material's transparency. 6. Diffraction: When light encounters an obstacle or a slit that is comparable in size to its wavelength, it bends around the obstacle or spreads out after passing through the slit. This is known as diffraction. 7. Interference