Two mirrors $AB$ and $CD$ are arranged along two parallel lines. The maximum number of images of object $O$ that can be seen by any observer is

$A$ point source is placed at coordinates $(0,1)$ in the $xy$-plane. $A$ ray of light from the source is reflected on a plane mirror placed along the $X$-axis and perpendicular to the $xy$-plane. The reflected ray passes through the point $(3,3)$. What is the path length of the ray from $(0,1)$ to $(3,3)$?

If there are mirrors on the ceiling and two adjacent walls of a room,how many images of a person in the room will be visible?

The light rays from an object have been reflected towards an observer from a standard flat mirror. The image observed by the observer is:

$A$ man of height $170\, cm$ wants to see his complete image in a plane mirror (while standing). His eyes are at a height of $160\, cm$ from the ground.

When two mirrors are placed at an angle of $60^{\circ}$ to each other,how many images will be formed by them?