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 at the left will appear at the right and vice-versa. The half arrow currently pointing north east will face north west in the mirror image, thus first two options are eliminated.

Also, for the smaller arrows in the semi circle, the 1st arrow is pointing upwards, similarly, in the mirror image it will face upwards but the direction will be reversed, thus third option is not possible.

=> Ans - (D)