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

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

View Answer

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

View Answer

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

View Answer

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)

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

Answer: Only B

9 The basic geometric transformations are

A Translation

B Rotation1.07

C Scaling

D All of the mentioned

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

Answer: Repositioning it along with straight line path

19 Basic geometric transformation include

A Translation

B Rotation

C Scaling

D All of these

View Answer

Answer: All of these

20 Some additional transformation are

A Shear

B Reflection

C Both A & B

D None of these

View Answer

Answer: Both A & B

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