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
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
A letter 'L' is written on a paper. When placed in front of a mirror, the mirror image will look like which letter?
Practice 2easy
A word 'REASONING' is written on a paper. When the paper is held in front of a mirror, how will the word appear?
Practice 3easy
Which option shows the correct mirror image of the letter 'P' when reflected in a vertical mirror?
Practice 4easy
A clock showing 3:00 is placed in front of a vertical mirror. What time will be shown in the mirror image?
Practice 5easy
A word 'REASONING' is written on a paper. When the paper is held in front of a mirror, which of the following will be the mirror image of the word?
Practice 6easy
A person's face is photographed from the front. When this photograph is held in front of a mirror, which feature will appear on the opposite side compared to the original photograph?
Practice 7easy
A figure shows the number '2847' written on a transparent sheet. When this sheet is held in front of a mirror, what will be the mirror image of this number?
Practice 8easy
A word 'MIRROR' is placed in front of a mirror. Which of the following represents the mirror image of the word 'MIRROR'?
Practice 9easy
When a clock showing 3:00 is placed in front of a mirror, what time will be shown in the mirror image?
Practice 10easy
A word 'REASONING' is written on a paper. When this paper is placed in front of a mirror, how will the word appear in the mirror image?
Practice 11easy
The letter 'F' is written on a transparent sheet. When this sheet is flipped horizontally (mirror image), which of the following represents the correct mirror image?
Practice 12easy
A clock shows 3:00. What time will it show in a mirror image?
Practice 13easy
A number '2468' is written on a transparent sheet. When this sheet is placed in front of a mirror, what will be the mirror image of this number?
Practice 14medium
A clock showing 3:15 is placed in front of a vertical mirror. What time will the mirror image show?
Practice 15medium
A word is written as REASONING. When this word is seen in a mirror placed vertically on the right side, how will it appear?
Practice 16medium
A figure consists of a square with a diagonal line drawn from the top-left corner to the bottom-right corner. When this figure is reflected in a vertical mirror placed on the right side, which corners will the diagonal line connect in the reflected image?
Practice 17medium
A figure shows a shape with a triangle pointing upward, a square below it, and a circle at the bottom. When this figure is reflected in a horizontal mirror (placed below the figure), which statement is true?
Practice 18medium
A clock shows 3:15. What time will it show in a mirror placed vertically on the right side of the clock?
Practice 19medium
A figure shows a triangle with vertices labeled A (top), B (bottom-left), and C (bottom-right). When this figure is reflected in a horizontal mirror (placed below the figure), which vertex will be at the top in the reflected image?
Practice 20medium
A figure consists of a right-angled triangle with the right angle at the bottom-left corner, the vertical side on the left, and the horizontal side at the bottom. When this figure is reflected in a water surface (horizontal mirror), which of the following correctly describes the reflected image?
24 more practice questions in the Study Panel
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