Question

# A number of images are formed, when a pair of mirrors are kept at an angle to each other this is because ______?

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Solution

## When the two mirrors are aligned at a $0°$ angle with each other i.e., in a parallel mirror system, there is an infinite number of images. If two plane mirrors are placed together on one of their edges to form a right-angle mirror system and then the angle between them is decreased, the number of images that can be seen increases.The angle of two adjacent plane mirrors determines the number of images formed. If the angle between the plane mirrors is $\theta$ in degrees, then the number of images equals to $\begin{array}{l}n=\frac{360}{\theta }–1\end{array}$where $n$ is the number of images formed.Hence, a number of images are formed, when a pair of mirrors are kept at an angle to each other this is because the image formed by the first mirror acts as the object for the second mirror.

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