If the mirror image of a number sequence is '987654321', what was the original sequence?
Answer: A
Mirror image reverses the sequence. If mirror shows '987654321', the original was '123456789'.
Q.62Medium
In a water image, a 'P' shaped figure will appear as:
Answer: B
Water image creates vertical flip. The capital 'P' when flipped vertically appears similar to lowercase 'b'.
Q.63Medium
If 'MIRROR' appears in water image as 'RORRIM', what transformation occurred?
Answer: A
MIRROR reversed to RORRIM indicates a horizontal sequence reversal, which is characteristic of mirror image, not water image.
Q.64Medium
A pentagon with one vertex pointing upward will have this vertex pointing ___ in its water image.
Answer: B
Water image flips figures vertically. An upward-pointing vertex becomes downward-pointing in the water image.
Q.65Medium
If a word has mirror symmetry, its mirror image will be:
Answer: B
If a word has perfect mirror symmetry (like 'RADAR' or 'LEVEL'), its mirror image will be identical to the original.
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Q.66Medium
A clock showing 3:15 is placed in front of a mirror. What time will be shown in the mirror image?
Answer: A
When a clock is mirrored horizontally, 3:15 becomes 8:45. The hour and minute hands swap positions relative to the vertical axis.
Q.67Medium
In a water image, how does a vertical line positioned at 45 degrees appear?
Answer: C
In water image (vertical mirror reflection), angles are inverted vertically. A 45-degree line becomes 45 degrees on the opposite side of the horizontal.
Q.68Medium
A triangle with vertices at points (1,1), (3,1), and (2,3) is reflected in a vertical mirror (y-axis). What will be the new coordinates of the top vertex?
Answer: A
In vertical mirror reflection (y-axis), x-coordinates change sign while y-coordinates remain the same. (2,3) becomes (-2,3).
Q.69Medium
A square of side 5cm with a diagonal drawn from top-left to bottom-right is placed before a vertical mirror. How does the diagonal appear in the mirror image?
Answer: A
In vertical mirror reflection, the diagonal that went from top-left to bottom-right now goes from bottom-left to top-right (horizontally reversed).
Q.70Medium
The word 'MATHEMATICS' is reflected in a horizontal mirror (water image). How many letters will look identical to their original form?
Answer: C
Letters with horizontal symmetry: M, A, T, H, E, I. These 6 letters appear identical in water image.
Q.71Medium
A semicircle with its flat edge at the top is reflected in a horizontal mirror. How will it appear?
Answer: A
In horizontal water image reflection, the top and bottom are flipped, so the flat edge moves from top to bottom.
Q.72Medium
Which letter from the English alphabet has NO line symmetry in either mirror or water images?
Answer: D
'Z' has no vertical or horizontal symmetry. In both mirror and water images, it appears different from its original form.
Q.73Medium
A regular hexagon with one vertex pointing straight up is placed before a vertical mirror. How many vertices will remain in the same relative position (same row)?
Answer: B
In a regular hexagon with top vertex pointing up, only the top vertex and bottom vertex remain on the centerline and maintain the same relative row position.
Q.74Medium
Which of the following numbers remains numerically unchanged when reflected in a vertical mirror?
Answer: D
All three numbers (121, 101, 111) have digits that are vertically symmetric (1 and 2 are symmetric), and when reflected, they read the same numerically.
Q.75Medium
When the word 'COMPETITIVE' is reflected in a vertical mirror, which letter will appear in the same position as in the original word?
Answer: C
Only the letter 'O' has vertical symmetry and appears the same in mirror reflection. However, checking all letters: C, O, T, I, V - only O and I have true vertical mirror symmetry. I appears same in mirror, so answer is I.
Q.76Medium
A clock showing 3:15 is reflected in a vertical mirror. What time will the mirror image show?
Answer: A
In a vertical mirror reflection of a clock, the time transforms as: 12 - (actual time) or using the clock position, 3:15 reflects to 8:45.
Q.77Medium
A figure with vertices at (2,3), (5,3), (5,6), (2,6) is reflected across the y-axis. The new position of vertex (5,3) will be:
Answer: A
Reflection across the y-axis changes (x,y) to (-x,y). Therefore, (5,3) becomes (-5,3).
Q.78Medium
A parallelogram with sides 6cm and 8cm is reflected in a vertical mirror. What will be the dimensions of the mirror image?
Answer: B
Mirror reflection preserves dimensions. The sides remain 6cm and 8cm, only the orientation may change.
Q.79Medium
The word 'INDIA' when subjected to water image transformation becomes:
Answer: A
Water image (horizontal reflection) reverses the sequence. 'INDIA' becomes 'AIDNI' with letters in reverse order.
Q.80Medium
A triangle ABC with angle A = 90°, angle B = 60° is reflected in a vertical mirror. The angles in the mirror image will be:
Answer: D
Mirror reflection preserves angles. The angles remain 90°, 60°, 30° in the same measures, though vertex positions may change.
