If angle θ between two mirrors is such that n = $\dfrac{360}{θ}$ is odd and the object is placed asymmetrically between the mirrors, then the number of images formed is:

1. n + 1
2. n + 2
3. n - 1
4. n

n

Reason — There are two cases possible:

Case 1 — If angle θ° between the mirrors is such that $n = \dfrac{360\degree}{\theta\degree}$ is odd:

1. the number of images is n, when the object is placed asymmetrically between the mirrors.
2. the number of images is n - 1, when the object is placed symmetrically (i.e., on the bisector of the angle) between the mirrors.

Case 2 — If $n = \dfrac{360\degree}{\theta\degree}$ is even, the number of images is always n - 1 for all positions of object in between the mirrors.