Question

Angle between two mirrors is ${70}^{\circ }$ then number of images of object placed between the mirrors symmetrically is

Answer 1

The images will be formed until the object is in the field of view of mirror. For a plane mirror, we can say that this field of view is 180${}^o$. So we stopped at 175${}^o$, because after this there will be no image in the field of view of mirror.