Paper Folding Quiz II, Non Verbal Reasoning - Mechanical Engineering MCQ

Solution:

We are given a square transparent sheet (X) with a pattern and a dotted horizontal fold line. We need to determine how the pattern will look when the sheet is folded along this dotted line.

Step 1: Understand the pattern on the original sheet (X)

• The sheet is divided by a dotted horizontal line.
• On the upper half, there is a single diagonal line starting near the top-left corner going downwards towards the dotted line.
• On the lower half, there is a shorter diagonal line starting near the bottom-left corner going upwards towards the dotted line.

Step 2: Visualize the folding process

• The sheet is folded upwards along the dotted horizontal line.
• Since the sheet is transparent, after folding, the lower half will overlap the upper half, and the pattern on the lower half will be reflected vertically on the upper half.

Step 3: Reflect and combine the patterns

• When the lower half is folded up, the diagonal line on the lower half will flip vertically and appear as a diagonal line starting from the bottom edge of the folded sheet (which was originally the dotted line) going downwards to the right.
• Thus, the resulting pattern on the folded sheet will have two diagonal lines meeting near the center fold line, forming a "V" shape or two lines converging.

Step 4: Compare with given options

• Option (1) shows two parallel lines which is incorrect.
• Option (2) shows two diagonal lines converging at the fold line forming a "V" shape, matching our expectation.
• Option (3) and (4) show different patterns that do not match the reflection and folding logic.

Conclusion: The correct answer is option (2).

Correct option is D. 4
When the transparent sheet is folded at dotted line, both lines will intersect each other.

Solution:

The given pattern is on a transparent square sheet (X) with a dotted line indicating the fold line on the right side of the square.

When the sheet is folded along the dotted line, the right portion of the sheet will be flipped over to the left side. This will cause the pattern from the right side to be mirrored and placed adjacent to the left side pattern.

Let's analyze the pattern step-by-step:

• The left side of the square (before the dotted line) has a series of vertical and horizontal black and white lines in different sections.
• The right side of the square (after the dotted line) contains a vertical striped pattern.
• When folded, this vertical striped pattern on the right will flip horizontally and appear on the left side of the fold line.
• Thus, the combined pattern after folding will have the original left side pattern plus the horizontally mirrored right side pattern adjacent to it.

Out of the four options, only option (4) correctly shows the pattern with the vertical stripes mirrored and placed on the left side, matching the fold.

Therefore, the correct answer is option D (4).

Solution:

The given problem involves a transparent square sheet (X) with a pattern of dots on the left half. The sheet is to be folded along the dotted vertical line in the middle. We need to determine how the pattern will appear after folding from the given four options.

Step-by-step reasoning:

• The dotted line acts as the fold line, so the right half of the sheet will be folded over the left half.
• Since the sheet is transparent, the dots on the left side will be visible through the sheet, and the dots on the right side (after folding) should be a mirror image of the dots on the left side, but flipped horizontally.
• Look at the original pattern (X):
  • On the left half, there are 4 dots arranged as follows: two dots near the top, one near the middle, and one near the bottom.
  • When folded, the right half should show the mirror image of these dots.
• Checking each option:
  • Option 1: The dots do not mirror correctly across the fold line.
  • Option 2: The dots are mirror images of the left side pattern, correctly positioned when folded.
  • Option 3: The dots are vertically flipped, which is incorrect for this fold.
  • Option 4: The dots are not mirrored properly; positions do not match.

Hence, the correct pattern after folding is the one shown in Option 2.

Final answer: D. 2

Option A is the correct answer.

Remember, the sheet is transparent so everything will be visible from above.

So, here we can eliminate options A and B. Now, out of two options remaining D shows the correct pattern if the sheet is folded at a dotted line.