SSC CGL 2024 Tier-I · 25 September 2024, Shift 1 · General Intelligence and Reasoning · Question 12 of 100

Text as printed on a candidate's response sheet for this shift; answer per SSC's tentative key as marked on that sheet. Solution last reviewed 10 September 2026.

Where this paper and its answers come from

SSC does not publish CGL question papers or a public answer key. The questions and options here are reproduced as printed on a candidate's own response sheet for this shift — the Commission's text, unchanged. Each answer is SSC's tentative key as marked on that sheet; SSC allowed challenges to it and never publishes a final key. The solutions are written by UnlockIAS.

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

Answer

Why

Correct — C. The mirror MN is a vertical line standing to the right of the string, so the reflection does two things at once: it reverses the reading order, and it flips every character left to right.

The string reads Y a T h 9 7, so the reflection must read 7, 9, h, T, a, Y from left to right. All four options manage that much, so the order settles nothing.

Rule: each character is flipped left to right, never top to bottom.

T and Y are symmetric about a vertical axis, so a left-right flip leaves them looking exactly as they were — they must stay upright. The a, h, 9 and 7 are not symmetric, so all four must appear reversed.

Option (c) is the one that reverses the a, the h, the 9 and the 7 while leaving the T and the Y upright.

Why the others are wrong

(a)
Every character in option (a) is right except the T, which is printed upside down with its bar along the bottom. A left-right flip leaves a T unchanged, so an inverted T cannot come from this mirror.
(b)
Option (b) reverses the 7, the 9, the h and the a correctly, then turns the Y upside down so its fork opens downward. A vertical mirror cannot invert a character top to bottom.
(d)
The 7 in option (d) is not reversed at all — its stroke still leans down to the left, exactly as in the original — and its h is turned upside down, with the arch below the letter instead of above it.

Concept

A mirror on a vertical line does two separate things, and both have to be checked. It reverses the order of the characters, and it laterally inverts each character on its own.

The characters that give the item its difficulty are the ones a lateral flip does not change. T and Y look identical before and after, so nothing about them can go wrong — which is why the wrong options attack exactly those two.

A character flipped top to bottom belongs to a water image, a different transformation altogether.

Reversing the order is the easy half, and every option here does it. The item is decided entirely on the characters, and specifically on whether the two vertically symmetric ones have been left alone.

Key facts

A mirror on a vertical line reverses the order of the characters and flips each one left to right.
T and Y are symmetric about a vertical axis, so a vertical mirror leaves them looking unchanged.
The a, h, 9 and 7 are not symmetric about a vertical axis, so all four must appear reversed in the correct option.

Study next

Water-image items, where the flip runs top to bottom instead of left to rightMirror items with the mirror line drawn below the figure rather than beside itWorking out which capital letters survive a vertical mirror unchanged and which survive a horizontal one

Common traps

Checking only that the reading order has been reversed, which all four options do.
Accepting a character that has been flipped top to bottom, which belongs to a water image and not to a mirror at MN.

SSC prints the string as an image with MN drawn beside it, so the check has to be made character by character rather than by reading a word. The same MN mirror frame is asked at 09 Sep 2024, 09:00, Reasoning Q.10 and at 10 Sep 2024, 09:00, Reasoning Q.2.

Related PYQs

No directly related past PYQ was found.