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CHAPTER-L1, LIGHT, SHADOWS AND REFLECTIONS, , ©, , The world around us is full of colourful and OBJECTIVES, beautiful things such as the bright and the shining, sun, blue sky and green trees. We can see all these, things only in the presence of light. In fact, light is, the only source of energy which enables us to see., , When an object reflects the light falling on it, we are, able to see that object. Therefore, light can be defined, as a form of energy that gives us the sensation of, sight., , You will notice that what you actually see are dust, particles which shine when light falls on them. They,, therefore, light up the path of the light and it seems as if you are actually seeing the light. If, the room were completely dust free, the path of light would be invisible., , Dee hg, , Here some pictures of artificial and natural sources of light are given below., Tick (“) the natural sources of light., , NOWBOS, , , , SOURCES OF LIGHT, , An object which emits light is called a source of light. There are two types of sources of, light-natural sources and artificial sources., , 6 ——