Download PDF
Free download in PDF 2D Transformation in Computer Graphics Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(1)
An ellipse can also be rotated about its center coordinates by rotating
[A]
End points
[B]
Major and minor axes
[C]
Only A
[D]
None
Answer: Major and minor axes
(2)
________ is the rigid body transformation that moves object without deformation.
[A]
Translation
[B]
Scaling
[C]
Rotation
[D]
None of these
(3)
The two-dimensional rotation equation in the matrix form is
[A]
P’=P+T
[B]
P’=R*P
[C]
P’=P*P
[D]
P’=R+P
(4)
The original coordinates of the point in polor coordinates are
[A]
X’=r cos (Ф +ϴ) and Y’=r cos (Ф +ϴ)
[B]
X’=r cos (Ф +ϴ) and Y’=r sin (Ф +ϴ)
[C]
X’=r cos (Ф -ϴ) and Y’=r cos (Ф -ϴ)
[D]
X’=r cos (Ф +ϴ) and Y’=r sin (Ф -ϴ)
Answer: X’=r cos (Ф +ϴ) and Y’=r sin (Ф +ϴ)
(5)
The rotation axis that is perpendicular to the xy plane and passes through the pivot point is known as
[A]
Rotation
[B]
Translation
[C]
Scaling
[D]
Shearing
(6)
Positive values for the rotation angle ϴ defines
[A]
Counterclockwise rotations about the end points
[B]
Counterclockwise translation about the pivot point
[C]
Counterclockwise rotations about the pivot point
[D]
Negative direction
Answer: Counterclockwise rotations about the pivot point
(7)
To generate a rotation , we must specify
[A]
Rotation angle ϴ
[B]
Distances dx and dy
[C]
Rotation distance
[D]
All of the mentioned
(8)
A two dimensional rotation is applied to an object by
[A]
Repositioning it along with straight line path
[B]
Repositioning it along with circular path
[C]
Only B
[D]
None of these
(9)
The basic geometric transformations are
[A]
Translation
[B]
Rotation1.07
[C]
Scaling
[D]
All of the mentioned
Answer: All of the mentioned
(10)
To change the position of a circle or ellipse we translate
[A]
Center coordinates
[B]
Center coordinates and redraw the figure in new location
[C]
Outline coordinates
[D]
All of the mentioned
Answer: Center coordinates and redraw the figure in new location
(11)
Polygons are translated by adding __________ to the coordinate position of each vertex and the current attribute setting.
[A]
Straight line path
[B]
Translation vector
[C]
Differences
[D]
Only B
(12)
A straight line segment is translated by applying the transformation equation
[A]
P’=P+T
[B]
Dx and Dy
[C]
P’=P+P
[D]
Only C
(13)
_________ is a rigid body transformation that moves objects without deformation.
[A]
Rotation
[B]
Scaling
[C]
Translation
[D]
All of the mentioned
(14)
The two-dimensional translation equation in the matrix form is
[A]
P’=P+T
[B]
P’=P-T
[C]
P’=P*T
[D]
P’=p
(15)
In 2D-translation, a point (x, y) can move to the new position (x’, y’) by using the equation
[A]
x’=x+dx and y’=y+dx
[B]
x’=x+dx and y’=y+dy
[C]
X’=x+dy and Y’=y+dx
[D]
X’=x-dx and y’=y-dy
Answer: x’=x+dx and y’=y+dy
(16)
The translation distances (dx, dy) is called as
[A]
Translation vector
[B]
Shift vector
[C]
Both A and B
[D]
Neither A nor B
(17)
We translate a two-dimensional point by adding
[A]
Translation distances
[B]
Translation difference
[C]
Only A
[D]
None of these
(18)
A translation is applied to an object by
[A]
Repositioning it along with straight line path
[B]
Repositioning it along with circular path
[C]
Only B
[D]
None of these
Answer: Repositioning it along with straight line path
(19)
Basic geometric transformation include
[A]
Translation
[B]
Rotation
[C]
Scaling
[D]
All of these
(20)
Some additional transformation are
[A]
Shear
[B]
Reflection
[C]
Both A & B
[D]
None of these
Take Mock Tests