Determine the number of images formed when the two plane mirrors are inclined at an angle of 60^o to each other.

The number of images created for an object positioned between the mirrors will be:
$\mathrm{N}=\frac{360}{60}-1$
$\Rightarrow \mathrm{N}=6-1$
$\Rightarrow \mathrm{N}=5$
 Two plane mirrors are kept, making an angle of 60 degrees between them. For an object placed in between the mirrors, the number of images formed will be 5.