Hurrah, we come to the end of the module! We started by discussing how light spreads within a room. We saw in the module that light rays follow Laws of Reflection. It is these laws that help light spread within a room.
As light falls on different objects, because their shapes are different, each object will have its own angle of incidence. So, the angle at which light gets reflected is also different.
Once a light ray gets reflected, it goes to another part of the room and gets reflected again. Due to these multiple reflections, at many different angles, the entire room gets filled with light.