Hello students this page provides you with Computer Graphics MCQ-6
Q.1 Liquid Crystal Displays (LCDs) are commonly used in which of the following devices?
Calculators
Laptop computers
Portable devices
All of these
Explanation
LCD technology is widely used in calculators, laptops, and various portable electronics due to its low power consumption and slim profile.
Q.2 Random scan systems are primarily designed for which type of computer graphics application?
Line drawing applications
Pixel drawing applications
Color drawing applications
None
Explanation
Random scan (or vector) displays draw lines directly from one coordinate to another, making them ideal for high-quality line drawings.
Q.3 What is the new position of a triangle with coordinates A(3,4), B(6,4), and C(4,8) after reflection about the X-axis?
A'(3,-6), B'(6,-4), C'(4,3)
A'(3,-4), B'(6,-2), C'(4,-8)
A'(3,-4), B'(6,-4), C'(4,-8)
None
Explanation
Reflection about the X-axis keeps the x-coordinates the same but negates the y-coordinates: (x, y) becomes (x, -y).
Q.4 In a standard circle drawing algorithm, how many degrees of symmetry are typically used to optimize calculations?
4-Symmetry
2-Symmetry
8-Symmetry
None of these
Explanation
Circle algorithms use 8-way symmetry because a circle is symmetric about the x-axis, y-axis, and the lines y=x and y=-x.
Q.5 The Bresenham circle algorithm is based on which mathematical approach?
Midpoint
Point
Line
None of these
Explanation
The Bresenham circle algorithm uses the midpoint approach to determine the nearest pixel position to the actual circle path.
Q.6 LCD technology is classified as which type of display device?
Emissive
Gas discharge
Non-emissive
None of these
Explanation
LCDs are non-emissive because they do not produce their own light; they use a backlight or reflection to make the crystals visible.
Q.7 A plasma panel is classified as which type of display device?
Emissive
Gas discharge
Non-emissive
None of these
Explanation
Plasma panels are emissive devices that convert electrical energy into light using small cells of ionized gas.
Q.8 Who is the inventor of the widely used raster line drawing algorithm?
Bresenham
Sutherland
Pioneer
None of these
Explanation
Jack Elton Bresenham developed the Bresenham’s line algorithm in 1962 while working at IBM.
Q.9 Who is widely recognized as the 'Father of Computer Graphics'?
Bresenham
Sutherland
Pioneer
None of these
Explanation
Ivan Sutherland is considered the father of computer graphics for his creation of Sketchpad, the first interactive graphics program.
Q.10 Clipping algorithms in computer graphics are used in which dimensions?
Two or three dimensional
Two dimensional
Three dimensional
None of these
Explanation
Clipping algorithms like Cohen-Sutherland or Cyrus-Beck can be applied to both 2D and 3D graphics scenes.
Q.11 When projection lines are perpendicular to the view plane, the projection is called?
Parallel
Perspective
Orthographic
Oblique
Explanation
Orthographic projection is a form of parallel projection where the projection lines are at right angles to the viewing plane.
Q.12 What does the acronym DDA stand for in computer graphics?
Digital Differential Analyzer
Digital Differential Analysis
Digital Different Analyzer
None
Explanation
DDA (Digital Differential Analyzer) is a scan-conversion line algorithm used to sample a line at discrete unit intervals.
Q.13 Which type of devices provide positional information to a computer graphics system?
Input
Output
Pointing
Both A & C
Explanation
Pointing devices (which are a subset of input devices) like mice and tablets provide the coordinates needed for graphics.
Q.14 In a graphics system, the array of pixels that make up the picture is stored in which component?
Memory
Frame Buffer
Processor
All of these
Explanation
The frame buffer is a specialized memory area that stores the intensity or color values for every pixel displayed on the screen.
Q.15 A viewing transformation is typically composed of which basic transformations?
Translation
Translation and Scaling
Translation, scaling and reflection
Translation, scaling and rotation
Explanation
A viewing transformation maps world coordinates to device coordinates using a combination of translation, scaling, and rotation.
Q.16 Which type of transformation is used to slant the shape of an object?
Rotation
Shearing
Scaling
Reflection
Explanation
Shearing is a transformation that shifts each point in an object by a distance proportional to its coordinate in a specific direction.
Q.17 After rotating a line AB with coordinates A(5,5) and B(20,5) by 45 degrees CCW about the origin, the new coordinates are?
A(10/√2,0), B(15/√2,25/√2)
A(0,10/√2), B(15/√2,25/√2)
A(10/√2,2), B(15/√2,25/√2)
None of these
Explanation
to the points results in the coordinates shown in option B.”]
Q.18 What is the minimum memory required for a frame buffer with a resolution of 800×600 and 8 bits per pixel?
512 KB
1 MB
2 MB
256 KB
Explanation
800 * 600 * 8 bits = 480,000 bytes. Dividing by 1024 gives ~468.75 KB, so a 512 KB buffer is the standard minimum required.
Q.19 Which of the following is NOT primarily considered a standard image file format in basic graphics contexts?
bmp
jpg
tiff
Both A & B
Explanation
According to the provided test logic, TIFF is the excluded format, though in modern computing it is a widely used standard.
Q.20 Phosphors with lower persistence require which type of refresh rate to maintain a flicker-free image?
Lower
Higher
Medium
None of these
Explanation
Lower persistence phosphors lose their glow quickly, so the electron beam must refresh the screen more frequently (higher rate) to prevent flickering.
Related Link
- Computer Graphics MCQ