2D Transformation in Computer Graphics Quiz | 2D Transformation in Computer Graphics Multiple Choice Questions and Answers

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Questions
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

Answer: Rotation
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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

Answer: 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

Answer: Rotation
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

Answer: Rotation angle ϴ
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

Answer: Only B
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

Answer: 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

Answer: P’=P+T
13 _________ is a rigid body transformation that moves objects without deformation.
A Rotation
B Scaling
C Translation
D All of the mentioned

Answer: Translation
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

Answer: P’=P+T
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

Answer: Both A and B
17 We translate a two-dimensional point by adding
A Translation distances
B Translation difference
C Only A
D None of these

Answer: Only A
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

Answer: All of these
20 Some additional transformation are
A Shear
B Reflection
C Both A & B
D None of these

Answer: Both A & B

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