If two plane mirrors are inclined at an angle of `120^@` to each other, how many images of an object are
formed?

Explanation

To determine the number of images formed by two plane mirrors inclined at an angle of \(120^\circ\) to each other, we can use the formula for the number of images formed by two mirrors:

\[ N = \frac{360^\circ}{\theta} - 1 \]

where \(N\) is the number of images and \(\theta\) is the angle between the two mirrors.

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