Understanding Visibility and Light Reflection
The world around us is perceived through our senses, with sight being particularly crucial. However, seeing an object is contingent upon light—either emitted from or reflected by that object—entering our eyes.
In Activity 13.1, students are introduced to the concept of visibility using a reflective setup. By performing a simple experiment with a comb and a torch, they observe how light behaves when it hits a reflecting surface, illustrating the transformation of the incident ray into the reflected ray.
Key points covered include the definition of the incident ray, which hits the surface, and the reflected ray, which bounces back after striking the surface. Through drawing diagrams and measuring angles, students are guided to explore the Laws of Reflection, notably that the angle of incidence equals the angle of reflection, and that these rays, along with the normal line, lie in the same plane. Together, these activities provide a fun and interactive way to reinforce the fundamentals of optics and reflections.