Tuesday, 27 September 2011

Reflection

When a ray of light strikes the surface of a smooth object such as a plane, mirror, it is reflected in a particular way.A ray of light is reflected from a plane surface at the same angel as it hits it. 


The periscope is an optical instrument used to see over high objects or around corners. A periscope is able to do this because it contains two plane mirrors that change the directions of the rays of light.




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