Computer Graphics Questions & Answers – 2D Rotation

1. 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) Any of the mentioned
View Answer

2. 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

3. 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

4. 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

5. 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

6. 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

7. ________ is the rigid body transformation that moves object without deformation.
a) Translation
b) Scaling
c) Rotation
d) Shearing
View Answer

8. 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

Sanfoundry Global Education & Learning Series – Computer Graphics.

To practice all areas of Computer Graphics, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]