If a mirror is placed on the line MN, then which of the answer figures is the right image of the given figure ?

A vertical mirror is placed, so the object on the left will appear right in reverse position and vice-versa.

So the small line at the bottom pointing bottom left will be reversed and will now point at bottom right, thus the middle two options will be eliminated.

Also, in the question figure, the curved line at the right will also be reversed, hence it will appear at left side, hence first option is the right image.

=> Ans - (A)