Select the correct mirror image of the given figure when the mirror is placed at MN as shown below.

Correct — B. MN is the vertical line drawn to the right of the row, so the reflection stands beside the characters.

Rule: a vertical mirror reverses the order of the row and flips every character left-to-right.

Order first. h R w 7 4 @ comes back as @ 4 7 w R h, with the h — printed farthest from MN — finishing at the right-hand end.

Then the shapes. The @, the 4 and the 7 all turn round, the w survives untouched because it is symmetric about a vertical axis, the R becomes a reversed R, and the h puts its tall stroke on the right with the arch reaching left.

Option (b) is the row that ends in that flipped h: arch on the left, tall stroke on the right, nothing dropping below the line.

Why the others are wrong

• (a)
  Right until the last character, where the h is turned upside-down: the arch drops to the bottom and the tall stroke hangs below the line. A sideways mirror moves no ink below the baseline.
• (c)
  The final h is left upright, stem on the left and arch on the right, exactly as printed. The order was reversed but the glyph was not.
• (d)
  The order reverses, but 7 and R still face the way they were printed. Every character turns in a mirror, and these two were left behind.

A vertical mirror does two jobs: it reverses the order of the row and it flips each character left-to-right. The wrong options are built by doing one job and skipping part of the other.

Work from the ends inwards. Decide first which character must finish on the right — it is the one printed farthest from MN — then check the most asymmetric shape in the row.

Here that shape is the h. Mirrored, its tall stroke moves to the right of the arch; turned upside-down it would hang below the line; left alone it stays as printed.

Key facts

• A vertical mirror reverses the order of a row and flips each character left-to-right.
• Lowercase w is symmetric about a vertical axis, so a vertical mirror leaves it unchanged.
• Mirrored, h keeps its arch but carries the tall stroke to the right of it.

Common traps

• Checking only the first character of an option, which more than one option gets right.
• Confusing a left-right flip with a half turn, which drops the tall stroke of h below the line.
• Assuming digits are safe — 4 and 7 both change under a vertical mirror.

No directly related past PYQ was found.