Question

Can can I find the angle between the plane mirrors

Answer 1

\The number of images formed when two mirrors are placed at an angle theta to each other is given by: n = ( 360 / theta ) - 1. Here, n = 5, so ( 360 / theta ) = n+1 = 6, hence theta = 360/6 = 60 deg. So the mirrors are placed at an angle of 60 deg with each other.