Answer :
If angle between two mirrors is x then number of images formed
n = 360/x -1 for example if x=60 then
n=360/60 -1
=6–1
= 5
if angle x does not divide 360 completely then it will be an integer
n=360/50
n =7.2
so 7 images will be formed
When two mirrors are parallel x=0
Infinite images will be forme
