
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.



Shown below is a part of a "S shaped motif". Dotted lines indicate the incomplete part of the motif. Visualize the remaining motif and draw the complete motif with a height of 15 cm. DO NOT draw the dotted lines. 
Shown on the left is a set of equations. Which option belongs to the same set? 
Shown below is an arrangement of closely stacked spheres. Assume each one to be in contact with its immediate neighbour. What is the total number of points where the spheres touch each other?
The words given below are written using a particular font. Identify the digit that does not belong to the same font.
Shown below are three perspective views of a solid object. How many surfaces does the object have? Assume hidden surfaces to be flat.
Which option will replace the question mark? 