Write true if the statment is corect an false if it isnot correct.
1.Light rays could be blocked,and they could pass trough alln typesn of materials since they trave on a straight line.
2.Optical fibers can be use in communication,in industyt, and medicine.
3.Light travels in a curve line when it passes trough a singel mediume.
4.The sun is the main source of a natural light.
5.Light travels slower in the air than the trough water beacusee air is less dence than water.

sana po may maka saggot in just 15 minutes.