In a painting the theory of showing nearer object big and distant object small is called:

Question

Accepted Answer

The correct option is 3: Perspective

Perspective is the fundamental art theory and technique used to graphically depict three-dimensional objects and spatial relationships on a two-dimensional surface, such as a canvas or paper. The principle described in the question, where closer objects are drawn larger and objects receding into the distance are progressively drawn smaller, is the core visual law upon which *linear perspective* is based. This phenomenon, known as diminution, is what creates the powerful illusion of depth, distance, and recession, making the flat image appear volumetric and realistic. Italian Renaissance artists codified this system, using vanishing points on a horizon line to ensure that all parallel lines converge and that the sizes of objects accurately decrease in relation to their distance from the viewer's fixed vantage point.

The incorrect option is 1: Proportion

Proportion refers to the relative size relationship between different parts of a single object or between two or more objects in a composition. For example, a sculptor uses proportion to ensure a figure's head is the correct size compared to its body, or a painter uses it to ensure a tree is of reasonable size next to a building. It establishes harmonious and realistic size comparisons *within* the picture plane, but it is not the theory that dictates how an object's size must change specifically due to its *distance* from the viewer. While perspective relies on proportional scaling to work, proportion itself is a general concept of size relativity, not the specific mechanism for creating depth.

The incorrect option is 2: Space

Space is one of the basic elements of art, referring to the area occupied by the artwork (actual space) or the illusion of depth created within the artwork (implied space). The question asks for the *theory* or *method* used to *show* the difference in size, not the element itself. Therefore, while a successful application of perspective creates the illusion of space, the term 'Space' is too broad and descriptive; it does not name the specific rule or method that governs the size change.

The incorrect option is 4: Golden Ratio

The Golden Ratio (or Divine Proportion) is a mathematical relationship, approximately 1.618:1, often used in art and architecture as a rule of thumb for achieving harmonious and aesthetically pleasing compositions. Artists apply this ratio to determine the placement of key elements or the overall dimensions of their work for visual balance. It is a compositional tool for aesthetics and harmony and has no direct relationship to the optical theory of rendering objects smaller as they recede into the background.