
Step 1: Understanding the Concept and Design Brief:
The core concept of the book is "optical illusion." Therefore, the cover design must not only be visually striking but should itself be an example of the book's content. It needs to intrigue and deceive the eye, immediately communicating the theme. The design must be clean, modern, and suitable for an established artist, integrating all required text elements (title, author, publisher, ISBN, etc.) harmoniously.
Step 2: Key Formula or Approach - Thematic Integration:
The design will be built around a powerful, classic optical illusion that is seamlessly integrated with the typography. The color palette will be minimal (e.g., black, white, and one accent color) to enhance the illusion's effect and give it a sophisticated, artistic feel.
A. Theoretical Description of the Front Cover Design:
The cover would feature the "impossible cube" or Penrose cube illusion. The main title, "THE ART OF OPTICAL," would be typographically integrated into the three visible faces of the cube, with the letters warping to follow the impossible perspective. The final word, "ILLUSION," would be placed below the cube in a clean, sans-serif font. The author's name, "Akihito Yujumari," would be positioned at the bottom. The illusion would be rendered in a stark black and white, with the typography in a contrasting accent color like electric blue, making it pop. This design is immediately engaging and thematic.
B. Theoretical Description of the Spine Design:
The spine would be the accent electric blue color to stand out on a bookshelf. The text would be aligned vertically (top to bottom).
- At the top: The title, "THE ART OF OPTICAL ILLUSION," in a bold, white sans-serif font.
- In the middle: The author's name, "Akihito Yujumari," in a slightly smaller, regular-weight white font.
- At the bottom: The publisher's logo (a simple square icon) and the name "Square Book Publishers" in a small white font.
The spine's simple, bold design ensures legibility while maintaining the book's modern aesthetic.
C. Theoretical Description of the Back Cover Design:
The back cover would maintain the minimalist aesthetic. - The background would be white.
- A subtle background pattern of thin, wavy grey lines would create a gentle motion illusion (like the Op Art of Bridget Riley), reinforcing the theme without distracting from the text.
- The descriptive paragraph ("This intriguing collection...") would be set in a clean, legible black sans-serif font in the upper half.
- The lower right corner would feature the ISBN number printed clearly above the barcode.
- A small publisher's logo could be placed in the bottom center.
The overall design is cohesive, professional, and directly reflects the book's intriguing content from front to back.
The words given below are written using a particular font. Identify the digit that does not belong to the same font.
Shown below is a cross-section which is revolved 270 degrees around the P-Q axis to create a solid. How many surfaces will the resultant solid have?
Shown below is a strip of paper which is folded multiple times. How many red pawns are placed on the same side of the paper as the blue pawn? 
Shown below is an image of multiple footwear items. How many complete pairs are there? 
Shown below is a configuration of an isosceles triangle sliced into eight parts, each of the same height. While the first and last parts of the triangle remain fixed, the remaining parts have been displaced horizontally, by multiples of 0.5 cm. What is the area of the grey portion?




If all the lines in the image below are of the same length but of different thickness and are drawn in perspective with respect to their distance from the viewer, which of the following statements will be TRUE? 
The words given below are written using a particular font. Identify the digit that does not belong to the same font.
Shown below is a cross-section which is revolved 270 degrees around the P-Q axis to create a solid. How many surfaces will the resultant solid have?
Shown below is a strip of paper which is folded multiple times. How many red pawns are placed on the same side of the paper as the blue pawn? 
Shown below is an image of multiple footwear items. How many complete pairs are there? 
Shown below is a configuration of an isosceles triangle sliced into eight parts, each of the same height. While the first and last parts of the triangle remain fixed, the remaining parts have been displaced horizontally, by multiples of 0.5 cm. What is the area of the grey portion?