Question

Which one of the answer figures is the correct mirror image of the problem figure with respect to X-X ?

• A.

  

• B.

  

• C.

  

• D.

  

Hint:

The axis X-X is vertical, so the mirror image reverses left and right while up and down stay unchanged. Compare the outline features one by one with each option.

Answer 1

The Correct Option is C

The mirror line X-X is a vertical line, so the mirror image is obtained by interchanging left and right: every feature on the left of the problem figure moves to the right at the same height, and every feature on the right moves to the left at the same height. The top stays at the top and the bottom stays at the bottom.
Reverse the problem figure left to right and compare it with the options.
Option (3) is the exact left-right reversal: the arcs at the top (a bowl-shaped arc crossing a second arc), the small lens-shaped overlap in the upper centre, the short horizontal tick on the right wall, the large arcs sweeping down on the right and the small crossing arcs at the lower left all keep their positions after reversal. Options (1), (2) and (4) change the arrangement of the central arcs (the lens or the arc crossings are missing, moved or replaced by a single big sweeping arc).
Answer: (3) the figure given as option 3