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?
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A)
Calculators
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B)
Laptop computers
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C)
Portable devices
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D)
All of these
Discuss itExplanation
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?
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A)
Line drawing applications
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B)
Pixel drawing applications
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C)
Color drawing applications
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D)
None
Discuss itExplanation
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?
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A)
A'(3,-6), B'(6,-4), C'(4,3)
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B)
A'(3,-4), B'(6,-2), C'(4,-8)
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C)
A'(3,-4), B'(6,-4), C'(4,-8)
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D)
None
Discuss itExplanation
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?
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A)
4-Symmetry
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B)
2-Symmetry
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C)
8-Symmetry
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D)
None of these
Discuss itExplanation
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?
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A)
Midpoint
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B)
Point
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C)
Line
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D)
None of these
Discuss itExplanation
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?
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A)
Emissive
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B)
Gas discharge
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C)
Non-emissive
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D)
None of these
Discuss itExplanation
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?
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A)
Emissive
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B)
Gas discharge
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C)
Non-emissive
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D)
None of these
Discuss itExplanation
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?
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A)
Bresenham
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B)
Sutherland
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C)
Pioneer
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D)
None of these
Discuss itExplanation
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'?
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A)
Bresenham
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B)
Sutherland
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C)
Pioneer
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D)
None of these
Discuss itExplanation
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?
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A)
Two or three dimensional
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B)
Two dimensional
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C)
Three dimensional
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D)
None of these
Discuss itExplanation
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?
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A)
Parallel
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B)
Perspective
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C)
Orthographic
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D)
Oblique
Discuss itExplanation
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?
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A)
Digital Differential Analyzer
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B)
Digital Differential Analysis
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C)
Digital Different Analyzer
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D)
None
Discuss itExplanation
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?
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A)
Input
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B)
Output
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C)
Pointing
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D)
Both A & C
Discuss itExplanation
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?
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A)
Memory
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B)
Frame Buffer
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C)
Processor
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D)
All of these
Discuss itExplanation
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?
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A)
Translation
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B)
Translation and Scaling
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C)
Translation, scaling and reflection
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D)
Translation, scaling and rotation
Discuss itExplanation
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?
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A)
Rotation
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B)
Shearing
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C)
Scaling
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D)
Reflection
Discuss itExplanation
Shearing is a transformation that shifts each point in an object by a distance proportional to its coordinate in a specific direction.
”Q.17
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A)
”A(10/√2,0),
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B)
”A(0,10/√2),
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C)
”A(10/√2,2),
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D)
”None
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 800x600 and 8 bits per pixel?
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A)
512 KB
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B)
1 MB
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C)
2 MB
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D)
256 KB
Discuss itExplanation
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?
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A)
bmp
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B)
jpg
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C)
tiff
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D)
Both A & B
Discuss itExplanation
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?
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A)
Lower
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B)
Higher
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C)
Medium
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D)
None of these
Discuss itExplanation
Lower persistence phosphors lose their glow quickly, so the electron beam must refresh the screen more frequently (higher rate) to prevent flickering.
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