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SBI Clerk Mirror & Water Images

Study Material — 3 PYQs (2024–2024) · Concept Notes · Shortcuts

SBI Clerk Mirror & Water Images is a frequently tested subtopic — 3 previous year questions from 2024–2024 papers are included below with concept notes, key rules and shortcut tricks.

3 PYQs
2024–2024
8 Practice
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10 Key Points
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Previous Year Questions

SBI Clerk Mirror & Water Images — Past Exam Questions

3 questions from actual SBI Clerk papers · all shown free · click option to reveal solution

Exam Q 12024Previous Year Pattern

A clock showing 3:00 is placed in front of a vertical mirror. What time will be shown in the mirror image?

Exam Q 22024Previous Year Pattern

The letter 'L' is written on a transparent sheet. When this sheet is placed in front of a vertical mirror, what will the mirror image look like?

Exam Q 32024Previous Year Pattern

A shape shows a triangle pointing upward (△). When this shape is reflected in a horizontal mirror (placed below it), which direction will the triangle point in the mirror image?

Concept Notes

Mirror & Water Images— Rules & Concept

Core ConceptRead this first — the foundation of the topic
CORE CONCEPT

Mirror Image: When you place a vertical mirror on the right side of an object, you get its mirror image. The image appears reversed horizontally

Water Image

When an object is reflected in water below it, you get its water image. The image appears flipped vertically

KEY RULES

Mirror Image Rules: - Left becomes right, right becomes left - Top and bottom positions remain same - Curves change direction (C becomes reversed C) - Numbers: 3 becomes reversed 3, 7 becomes reversed 7 Water Image Rules: - Top becomes bottom, bottom becomes top - Left and right positions remain same - Curves flip vertically (smile becomes frown) - Letters like M become W, p becomes d

Formula BlockMemorise — at least one formula appears in every paper

S:

Mirror Image: Horizontal flip (left-right reversal)

Water Image: Vertical flip (top-bottom reversal)

Combined: Both horizontal and vertical flip

Exam PatternsWhat examiners ask — read before attempting PYQs
1

Find mirror image of letters/numbers/shapes

2

Find water image of clock faces

3

Combined mirror and water images

4

Which option matches the given transformation

ShortcutsUse these to save 30–60 seconds per question

#1 - CLOCK METHOD: For clock mirror images: - Mirror time = 12:00 - Given time - If 3:15 is given, mirror = 12:00 - 3:15 = 8:45 - Remember to adjust minutes: 60 - given minutes

Worked ExampleSolve this step-by-step before moving on
1
Step 1

Write letters in reverse order: M-A-X-E

2
Step 2

Reverse each letter individually: - E becomes reversed E - X remains X (symmetrical) - A becomes reversed A - M becomes reversed M

3
Step 3

Final answer: Reversed M, Reversed A, X, Reversed E WORKED EXAMPLE 2: Question: Find water image of triangle with base at bottom

1
Step 1

Identify the orientation (base at bottom)

2
Step 2

Flip vertically - base moves to top

3
Step 3

All other features flip accordingly

4
Step 4

Answer: Triangle with base at top SHORTCUT TRICK #2 - SYMMETRICAL LETTERS: Symmetrical letters need no change: - Horizontally symmetrical: A, H, I, M, O, T, U, V, W, X, Y - Vertically symmetrical: B, C, D, H, I, O - Use this to eliminate wrong options quickly SHORTCUT TRICK #3 - DIRECTION ARROWS: For arrows in mirror/water images: - Mirror: Left arrow becomes right arrow - Water: Up arrow becomes down arrow - Combined: Diagonal arrows flip completely

Exam TrapsCommon mistakes students make — avoid these

#1: Students confuse mirror and water images. Remember: - Mirror = Side mirror of car (horizontal flip) - Water = Lake reflection (vertical flip) Many students apply wrong transformation and lose easy marks. ADVANCED TIP: For complex shapes, focus on one distinctive feature (like a small circle or line). Track how this feature moves in the transformation.

This saves time and reduces confusion. PRACTICE STRATEGY: Solve 10 questions daily. Start with simple letters, then move to numbers, shapes, and finally complex figures. Time yourself - aim for 30 seconds per question.

Key Points to Remember

  • Mirror image flips horizontally (left becomes right, right becomes left)
  • Water image flips vertically (top becomes bottom, bottom becomes top)
  • Clock mirror formula: 12:00 - Given time = Mirror time
  • Symmetrical letters remain unchanged in their respective transformations
  • Combined images require both horizontal and vertical flips
  • Direction arrows flip according to transformation type
  • Focus on distinctive features to track movement quickly
  • Letters like b become d in water image, p becomes q in mirror
  • Numbers 6 and 9 commonly interchange in water images
  • Practice identifying transformation type before attempting solution

Exam-Specific Tips

  • Mirror images show horizontal reversal with vertical positions unchanged
  • Water images show vertical reversal with horizontal positions unchanged
  • Clock showing 3:00 has mirror image showing 9:00
  • Letter 'R' becomes backwards 'R' in mirror image
  • Letter 'p' becomes 'q' in mirror and 'd' in water image
  • Number '2' becomes backwards '2' in mirror image
  • Triangle pointing up becomes triangle pointing down in water image
  • Combined mirror-water image produces 180-degree rotation effect
Practice MCQs

Mirror & Water Images — Practice Questions

8graded MCQs · easy to hard · full solution & trap analysis

All MCQs →
Practice 1medium

A clock shows 3:45. What time will it show when viewed in a mirror placed vertically in front of it?

Practice 2medium

A figure shows an arrow pointing towards the upper-right direction (↗). When this arrow is viewed in a water surface (horizontal mirror), which direction will it point?

Practice 3medium

A sequence of symbols is written as: ◆ ▲ ● ■ ◆. When viewed in a vertical mirror, what will be the 3rd symbol from the left in the mirror image?

Practice 4medium

A word is written as 'REASONING'. When this word is placed in front of a mirror, what will be the mirror image of the word?

Practice 5medium

A word is written as 'REASONING'. When this word is viewed in a mirror placed vertically on the right side, how will it appear?

Practice 6hard

A word is written on a transparent sheet. When this sheet is first placed in front of a mirror, the mirror image shows a horizontally flipped version. Then, the same sheet is placed in water such that it floats upside down (rotated 180° vertically). What is the combined effect on the original word after both transformations are applied sequentially?

Practice 7hard

A complex figure shows 4 identical squares arranged in a 2×2 grid, each containing a different symbol (triangle, circle, cross, star). When this figure is reflected in a water surface (horizontal reflection), then rotated 90° clockwise, what is the position of the square that originally contained the triangle (originally in top-left)?

Practice 8hard

A word is written as 'REASONING'. When this word is placed in front of a mirror, what will be the mirror image? Then, if the mirror image is placed in front of another mirror (perpendicular to the first), what will be the final image?

60-Second Revision — Mirror & Water Images

  • Remember: Mirror = horizontal flip, Water = vertical flip
  • Formula: Clock mirror time = 12:00 - given time
  • Trap: Don't confuse mirror and water transformations
  • Quick check: Identify symmetrical letters to save time
  • Focus: Track one distinctive feature for complex shapes
  • Speed tip: Eliminate options using symmetry rules
  • Common error: Applying wrong flip direction loses marks
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