Two mirrors inclined to each other produce 8 images of an object placed between them Through how much angle should - Science - Light - Reflection and Refraction

Question

Two mirrors inclined to each other produce 8 images of an object
placed between them Through how much angle should one of the mirror
be rotated to get only 2 images

Komal Jain · Accepted Answer

8 images can be formed when the object is symmetrically placed
between the mirrors
Number of images formed =8
360oθ-1=8⇒θ=360o9=40oTo get 2 images360oθ'-1=2⇒θ'=360o3=120oTherefore, one of the mirror should be rotated by 80o to get only 2 images

Two mirrors inclined to each other produce 8 images of an object placed between them.Through how much angle should one of the mirror be rotated to get only 2 images