Light: Light is a form of electromagnetic radiation (radiant energy) which makes things visible. When the light rays falls on objects, it is reflected back and enters our eyes. This produces the sensation of vision and hence, we are able to see the objects around us.
Important uses of light:
1. Light enables us to see even through a transparent medium because light is transmitted through it.
2. Light makes things around us visible.
2. Light is highly useful in modern communication. We can transmit thousands of telephonic conversations simultaneously via optical fibres over long distances.
D.
- 66.6 cm.
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