Q4. What is importance of light?
Ans. Importance of light:
- Light enables us to see the things around us.
- It is a form of energy.
- Light from the Sun gives us fuels.
- Light produces heat.
- Laser is the special kind of light that provides a very focused, powerful and controllable force of energy. It is used in surgery, space communication, drilling holes diamonds, in a CD players etc.