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Assessment
Write true if the statement is correct and false if it is not correct.
1. Light travels in a straight line when it passes through s single medium
2. The light that strikes a thick cardboard bends and find another way
pass through it.
3. Light rays could not be blocked and they could pass through all types
materials since they travel on a straight line.
4. A laser is a narrow but powerful beam light capable of travelling
distances on a straight line.
5. Optical fibers are used in communication, medicine and industry.
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