If you place an object between two hinged mirrors, light from the object bounces back and forth between the mirrors before it reaches your eyes. An image is formed in the mirrors each time the light bounces, forming multiple images.

Click to change the angle of the mirrors and notice how the number of reflected images changes.

Is there a relationship between the size of the angle and the number of reflected images? Notice the formula above changing as you adjust the angle of the mirrors. Can you use the formula to predict how many images you can see?

You can learn more about mirrors and images at our Mirrors and Images Activities site.

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