11 questions from actual SBI PO papers · all shown free · click option to reveal solution
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
When an object is reflected in water below it, you get its water image. The image appears flipped vertically
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
S:
Mirror Image: Horizontal flip (left-right reversal)
Water Image: Vertical flip (top-bottom reversal)
Combined: Both horizontal and vertical flip
Find mirror image of letters/numbers/shapes
Find water image of clock faces
Combined mirror and water images
Which option matches the given transformation
#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
Write letters in reverse order: M-A-X-E
Reverse each letter individually: - E becomes reversed E - X remains X (symmetrical) - A becomes reversed A - M becomes reversed M
Final answer: Reversed M, Reversed A, X, Reversed E WORKED EXAMPLE 2: Question: Find water image of triangle with base at bottom
Identify the orientation (base at bottom)
Flip vertically - base moves to top
All other features flip accordingly
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
#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.