VI/BCA/602 Student's Copy
2 0 1 8
6th Semester
BACHELOR OF COMPUTER APPLICATIONS
Paper No. BCA-602
Computer Graphics
Old Course
Full Marks 75
Time 3 hours
PART A—OBJECTIVE
Marks 25
The figures in the margin indicate full marks for the questions
SECTION—A
Marks 15
1. Tick the correct answer in the brackets provided 1×10=10
The maximum number of points that can be displayed without overlap
on a CRT is called
aspect ratio resolution
brightness pixel
The standard aspect ratio for PC is
6 5 4 3
3 2 5 3
Beam penetration method is usually used in
LCD raster scan display
random scan display DVST
/566 1 Contd.
The transformation in which an object is moved from one position to
another in circular path around a specified pivot point is called
rotation shearing
translation scaling
A sound produced by human voice is a good example of
analog data digital data
analog signal digital signal
The process of mapping a world window in world coordinate system to
viewport is called
transformation viewing
viewport
clipping window
screen coordinate system
GUI means
Graphical User Interaction
Graph User Interface
Graphical Uniform Interaction
Graphical User Interface
If the two end points of the codes of a line are (0001) and the
line is
totally visible partially visible
totally invisible transparent
The technique used to summarize the financial, statistical,
mathematical, scientific and economic data is
computer art
image processing
presentation graphics
All of the above
The quality of an image depends on
number of resolution used by an image
number of lines used by an image
number of pixels used by an image
All of the above
VI/BCA/602 2 Contd.
2. State whether the following statements are True or False by putting
a Tick mark in the brackets provided 1×5=5
The Cartesian slope intercept equation for a straight line is y mx b.
T F
A viewport is a polygon viewing region in computer graphics.
T F
MIDI file is device independent. T F
Memory area holding the intensity information of an image is called
refresh buffer. T F
The transformation that produces a parallel mirror image of an object
is called rotation. T F
SECTION—B
Marks 10
Answer the following questions 2×5=10
1. What is a display processor?
2. Differentiate between points and lines.
3. Explain viewing pipeline.
4. Explain text clipping.
5. What is a geometric transformation?
PART B—DESCRIPTIVE
Marks 50
The figures in the margin indicate full marks for the questions
1. What is computer graphics? Explain any three GUI applications. 5
Explain random scan and raster scan display with diagram. 5
OR
Explain Shadow Mask method for producing color displays with a
CRT. 5
State and explain different input and output devices. 5
VI/BCA/602 3 Contd.
2. Explain image processing technique in computer graphics. 4
Explain Cohen-Sutherland line clipping algorithm with suitable
diagram. 6
OR
What is Bezier curve? Explain different properties. 4
Explain Bresenham's line drawing algorithm. 6
3. Explain two-dimensional geometric transformations. 5
Explain mid-point subdivision algorithm. 5
OR
Explain in brief window and viewport. 5
Explain the working principle of CRT monitor with diagram. 5
4. Explain scan line seed fill algorithm. 4
Write short notes on the following 6
Hypertext
JPEG and MPEG
Sound card
OR
Write down the difference between stack-based and queue-based seed
fill algorithms. 4
Write short notes on the following 6
Sphere
Torus
Ellipsoid
5. What is MIDI? Write the advantages and disadvantages of MIDI. 5
What is animation? Explain different types of animation. 5
OR
Explain morphing and tweaking techniques in computer graphics. 5
What is multimedia? Explain different applications of multimedia. 5