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Welcome to the Computer Graphics MCQs Page

Dive deep into the fascinating world of Computer Graphics with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Computer Graphics, a crucial aspect of UGC CBSE NET Exam. In this section, you will encounter a diverse range of MCQs that cover various aspects of Computer Graphics, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within UGC CBSE NET Exam.

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Check out the MCQs below to embark on an enriching journey through Computer Graphics. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of UGC CBSE NET Exam.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Computer Graphics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Computer Graphics MCQs | Page 4 of 9

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Q31.
Consider the Breshenham’s line generation algorithm for a line with gradient greater than one, current point (xi, yi) and decision parameter, di. The next point to be plotted (xi+1, yi+1) and updated decision parameter, di+1, for di < 0 are given as .................

(A) xi+1 = xi+1
yi+1 = yi
di+1 = di + 2 dy

(B) xi+1 = xi
yi+1 = yi + 1
di+1 = di + 2 dx

(C) xi+1 = xi
yi+1 = yi + 1
di+1 = di + 2 (dx – dy)

(D) xi+1 = xi + 1
yi+1 = yi + 1
di+1 = di + 2 (dy – dx)

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q32.
A point P(2, 5) is rotated about a pivot point (1, 2) by 60°. What is the new transformed point P'?

a.

(1, 4)

b.

(–1, 4)

c.

(1, – 4)

d.

(– 4, 1)

Discuss
Answer: (b).(–1, 4)
Q33.
In perspective projection (from 3D to 2D), objects behind the centre of projection are projected upside down and backward onto the view-plane. This is known as ..............

a.

Topological distortion

b.

Vanishing point

c.

View confusion

d.

Perspective foreshortening

Discuss
Answer: (c).View confusion
Q34.
The Liang-Barsky line clipping algorithm uses the parametric equation of a line from (x1,y1) to (x2,y2) along with its infinite extension which is given as :

x = x1 + Dx.u
y = y1 + Dy.u

Where Dx = x2 – x1, Dy = y2 – y1, and u is the parameter with 0 ≤ u ≤ 1. A line AB with end points A(–1, 7) and B(11, 1) is to be clipped against a rectangular window with xmin=1, xmax=9, ymin=2, and ymax=8. The lower and upper bound values of the parameter u for the clipped line using Liang-Barsky algorithm is given as:

a.

(0, 2/3)

b.

(1/6, 5/6)

c.

(0, 1/3)

d.

(0, 1)

Discuss
Answer: (b).(1/6, 5/6)
Q35.
Consider the Breshenham’s circle generation algorithm for plotting a circle with centre (0,0) and radius ‘r’ units in first quadrant. If the current point is (x1,y1) and decision parameter is pi then what will be the next point (xi+1,yi+1) and updated decision parameter pi+1 for pi ≥ 0

a.

xi+1 = xi + 1               yi+1 = yi            pi+1 = pi + 4xi + 6

b.

xi+1 = xi + 1               yi+1 = yi - 1      pi+1 = pi + 4(xi - yi) + 10

c.

xi+1 = xi                     yi+1 = yi - 1      pi+1 = pi + 4(xi - yi) + 6

d.

xi+1 = xi - 1                yi+1 = yi            pi+1 = pi + 4xi + 10

Discuss
Answer: (b).xi+1 = xi + 1               yi+1 = yi - 1      pi+1 = pi + 4(xi - yi) + 10
Q36.
A point P(5,1) is rotated by 90 degrees about a pivot point (2,2). What is the coordinate of new transformed point P’ ?

a.

(3,5)

b.

(5,3)

c.

(2,4)

d.

(1,5)

Discuss
Answer: (a).(3,5)
Q37.
Let R be the rectangular window against which the lines are to be clipped using 2D Sutherland-Cohen line clipping algorithm. The rectangular window has lower left-hand corner at (-5,1) and upper right-hand corner at (3,7). Consider the following three lines for clipping with the given end point co-ordinates:

Line AB: A(-6,2) and B(-1,8)
Line CD: C(-1,5) and D(4,8)
Line EF: E(-2,3) and F(1,2)

Which of the following line(s) is/are candidate for clipping?

a.

AB

b.

CD

c.

EF

d.

AB and CD

Discuss
Answer: (d).AB and CD
Q38.
In perspective projection, if a line segment joining a point which lies in front of the viewer to a point in back of the viewer is projected to a broken line of infinite extent. This is known as ...................

a.

View confusion

b.

Vanishing point

c.

Topological distortion

d.

Perspective foreshortening

Discuss
Answer: (c).Topological distortion
Q39.
Which of the following statement(s) is/are correct with reference to curve generation?

I. Hermite curves are generated using the concepts of interpolation.
II. Bezier curves are generated using the concepts of approximation.
III. The Bezier curves lies entirely within the convex hull of its control points.
IV. The degree of Bezier curve does not depend on the number of control points.

a.

I, II and IV only

b.

II and III only

c.

I and II only

d.

I, II and III only

Discuss
Answer: (d).I, II and III only
Q40.
Which of the following is used for the boundary representation of an image object?

a.

Quad Tree

b.

Projections

c.

Run length coding

d.

Chain codes

Discuss
Answer: (d).Chain codes
Page 4 of 9

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