how can the number of images formed when 2 mirrors are placed at a certain angle?

Asked by rituparnna mishra | 2nd Nov, 2010, 12:00: AM

Expert Answer:

Dear Student,
If two plane mirrors are placed together on one of their edges so as to form a right angle mirror system and then the angle between them is decreased, some interesting observations can be made. One observes that as the angle between the mirrors decreases, the number of images that can be seen increases. In fact as the angle between the mirrors approaches 0 degrees (i.e., the mirrors are parallel to each other), the number of images approaches infinity.
The generation of two images is not difficult to explain; each of the two mirrors produces an image due to the single reflection of light off one of the mirror faces to an observer's eye. The remaining images are produced as the result of multiple reflections of light off more than one of the faces. Right angle mirrors will allow a maximum of two reflections of light from the object. But as the angle decreases, three, four, and even more reflections can occur.
Hope that satisfies your query.

Answered by  | 4th Nov, 2010, 10:29: AM

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