Choose the correct mirror image from the alternatives, when the mirror is placed on the line AB
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) →
A mirror image must pass two tests:
Shape: a mirror placed along AB (to the right of the figure) turns left into right. The 3 opens on its left, so its image is the reversed 3 (Ε-shaped), which opens on its right.
Shading: a mirror does not change the shading. Vertical stripes stay vertical in the image, so the image has the same vertical stripes as the 3.
Only Option (2) passes both tests:
Option (1) — the 3 is not reversed.
Option (2) — reversed, with vertical stripes, so this is the mirror image.
Option (3) — reversed, but the stripes run across (horizontal), not up and down.
Option (4) — reversed, but it is filled with dots, not stripes.