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How do we see things? You probably know by now: light (from a luminous source like the Sun) bounces or reflects off an object in all directions; some of those light rays reach our eyes, enabling us to see the object.

 

With mirrors and other reflective surfaces the key thing is that, instead of the light rays scattering in all sorts of directions, they stay together:

 

 

Note that light rays are shown as lines with an arrowhead demonstrating which way the light is going; mirrors are shown as a line with shading behind it.

 

Remember this important rule when dealing with light rays that strike a mirror:

THE LIGHT RAY IS REFLECTED AT THE SAME ANGLE AS THE INCIDENT RAY THAT STRUCK THE MIRROR: look for the same angles arriving at and leaving the mirror.

 

OK, let's see whether you can use those ideas as we travel through this worksheet.....

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