Hello students this page provides you with Computer Graphics MCQ-10
Computer graphics is a branch of computer science that is used to to display images, photos, pictures, graphics, chart etc.
It may also be defined as a branch of computer science that is used to create or develop images or pictures using the computer. It also allows to store the images or pictures on the computer.
This MCQ Sets is very useful of many Exam like Semester ,ISRO, DRDO ,Banking ,Railway etc.
Q.1 Reflection of a point about X-axis followed by a counter clockwise rotation of 90 degree is equivalent to reflection about the line?
x = -y
y = -x
x = y
x+y = 1
Explanation
Reflecting across the X-axis transforms (x, y) into (x, -y). Rotating this point 90 degrees CCW transforms it to (y, x). The transformation (x, y) to (y, x) is a reflection about the line x = y.
Q.2 Raster is a synonym for which of the following terms in computer graphics?
Array
Matrix
Model
All of the above
Explanation
A raster is a rectangular pattern of parallel scanning lines, which is mathematically represented as a matrix of pixels.
Q.3 How many K bytes does a frame buffer need for a 600 * 400 pixel monochrome display?
28.30 KB
29.30 KB
30 KB
None of these
Explanation
600 * 400 = 240,000 bits. Since 8 bits = 1 byte, 240,000 / 8 = 30,000 bytes. Converting to Kilobytes (dividing by 1024), we get approximately 29.30 KB.
Q.4 For a 2D transformation viewing, in how many ways can a clipping algorithm be applied?
1
2
3
None of these
Explanation
In the viewing pipeline, clipping can be performed either in the normalized coordinate system or in the device coordinate system.
Q.5 Two successive translations are considered to be?
Multiplication
Inverse
Subtractive
Additive
Explanation
When applying two successive translations, the displacement vectors are simply added together.
Q.6 The method of super-sampling is specifically associated with which technique?
Boundary fill algorithm
Gourand shading
Antialiasing
None of these
Explanation
Super-sampling is an antialiasing technique that reduces ‘jaggies’ by sampling at a higher resolution than the display and then averaging the results.
Q.7 Which of the following is considered an accurate and efficient raster line-generating algorithm?
DDA Algorithm
Mid-point algorithm
Parallel line algorithm
Bresenham's line algorithm
Explanation
Bresenham’s algorithm is highly efficient because it uses only integer addition, subtraction, and bit shifting, avoiding floating-point math.
Q.8 What does the acronym CGA stand for in the context of computer graphics?
Computer graphics array
Color Graphics Adapter
Computer graphics adopter
Color graphics array
Explanation
CGA (Color Graphics Adapter), introduced by IBM in 1981, was the first color display card standard for the IBM PC.
Q.9 Which transformation is used to alter the size of an object?
Scaling
Rotation
Translation
Reflection
Explanation
Scaling is the process of expanding or compressing the dimensions of an object in a graphics scene.
Q.10 What is another term for the Shearing transformation?
Selecting
Sorting
Scaling
Skewing
Explanation
Shearing (or Skewing) is a transformation that slants the shape of an object along a specific axis.
Q.11 Super-sampling is a method used for?
Boundary fills
Ground shading
Antialiasing
None
Explanation
Antialiasing techniques like super-sampling improve image quality by smoothing out the jagged edges of rasterized shapes.
Q.12 Which method is used interactively to construct and position straight lines, arcs, and circles?
Rubber band method
Gravity method
Dragging
None of these
Explanation
The rubber-band method allows a user to anchor one point and ‘stretch’ the line or shape to a new position before finalizing it.
Q.13 A symbolic representation of a computer object or process is called a(n)?
Icon
Menu
List
Label
Explanation
Icons are small graphical symbols used in GUIs to represent files, folders, or software actions.
Q.14 Which of the following is generally NOT categorized as a fundamental graphics object in computer graphics?
Diagrams
Text
Pictures
Charts
Explanation
While text is rendered, diagrams, pictures, and charts are considered the core visual components of computer graphics objects.
Q.15 What are the primary basic geometric transformations?
Translation
Rotation
Scaling
All
Explanation
Translation, Rotation, and Scaling form the foundation of most 2D and 3D geometric manipulations.
Q.16 If a circle is scaled in only one direction (e.g., along the X-axis), it becomes a(n)?
Parabola
Hyperbola
Ellipse
Circle
Explanation
Scaling a circle non-uniformly (using different factors for X and Y) results in an elliptical shape.
Q.17 In line clipping, a line with endpoint region codes of 0000 and 0100 is classified as?
Partially invisible
Completely visible
Completely invisible
None of these
Explanation
0000 indicates an endpoint is inside the window. 0100 indicates an endpoint is outside. Therefore, the line is partially visible (or partially invisible).
Q.18 In standard 3-bit or RGB systems, the color code '000' typically represents?
White
Black
Blue
Green
Explanation
In the additive RGB model, ‘000’ indicates the absence of red, green, and blue light, which results in black.
Q.19 Where is color and pixel information primarily stored in a graphics system?
Frame buffer
RAM
ROM
Graphics Card
Explanation
The frame buffer is a specialized portion of memory that holds the bitmap data representing the pixels to be displayed on the screen.
Q.20 Which searching/logic technique is effectively utilized in the Midpoint Subdivision algorithm?
Linear search
Binary search
Heap sort
Bubble sort
Explanation
Midpoint subdivision uses a binary search-like approach by repeatedly dividing a line segment in half to find the intersection point with the clipping boundary.
Related Link
Multiple Choice Questions For Computer Science & Engineering
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