Select the correct mirror image of the given figure when a mirror is placed on the right side of the figure.

When a mirror is placed on the right side of the figure,

The facing of the figure to the left and right direction changes to the opposite direction in the mirror image(left facing changes to right and vice versa). There won't be change in top and bottom direction.

The black dot which is towards bottom right will be towards bottom left in the mirror image.

The black triangular part in the square towards left will be towards right in the mirror image.

$$\therefore\ $$The mirror image of the given figure is

Hence, the correct answer is Option D