Hey!! Guys, welcome to our blog. I hope this article is quite useful for you. This is the set of MCQs on computer graphics or MCQs for computer graphics.
Note: If you missed the previous post Of MCQs on Computer Graphics then please check once. For checking click here.
Topic- input and output devices, Graphics Software, Pollygonfill, 2D transformation.
1.A mouse is a ……………
- Pointing device
- direct device
- Postioning device
- None of the above
2. ……………………..is a ball that can be rotated with the fingers or palm of the hand to produce screen cursor movement.
- Mouse
- Key board
- Tracker Ball
- None of the above
Explanations: Trackball is a two-dimensional positioning device.
3. What is Potentiometer?
Answer: Potentiometer is a part of the Tracker Ball, which attached to the ball, measure the amount and direction of rotation
4. ……………… are used for three –dimensional positioning and selection operations in virtual-reality systems, modeling, animation, CAD, and other application.
- SpaceBall
- Key board
- Tracker Ball
- None of the above
5. A joystick consists of a …………………
- a small, vertical lever (called the stick)
- screen cursor
- Tracker Ball
- None of the above
6. ……………..is constructed with a series of sensors that detect hand and finger motions.
- Data glove
- Mouse
- Tracker Ball
- None of the above
7. ……………..are used to select screen positions by detecting the light coming from points on the CRT.
- Data glove
- Mouse
- Tracker Ball
- Light pen
8. ……………………… is used for 3D positioning and modeling, animation, and other application.
a. Space ball
b. Trackball
c. Spac ball
d. All of the mentioned
Explanation: A space ball is a 3D positioning device.
9. …………… is used for detecting mouse motion.
a. Optical sensor
b. Rollers on the bottom of the mouse
c. Both a and b.
d. Sensor
Explanation: The rollers and optical sensors are used to record the amount and direction of movement.
10. ………………… are used to measure dial rotations.
a. Potentiometers
b. Volta meter
c. Parameter
d. Only a
Explanation:The potentiometer measures the dial rotations.
11. Computer graphics is classified into ….
- 2
- 3
- 7
- 5
Explanation:Computer graphics are classified into two distinct categories: raster and vector graphics..
12. ……………………. algorithm is another incremental scan conversion algorithm.
- Bresenham algorithm
- Line algorithm
- circle
- None of the above
Explanations: The significant advantage of this algorithm is that it uses only integer calculations.
13. ……………. describes spatial homogeneities.
- Spatial coherence
- Sphere coherence
- Scane Line coherence
- None of the above
Explanations: Use of spatial coherence to construct an efficient algorithm.
14. An alternate solid area scan conversion technique called ……………
- Bresenham’s line algorithm
- the edge fill algorithm
- Back-face culling.
- None of the above
15. On a color monitor, the refresh buffer is also called …………..
Answer: The screen buffer may also be called the video buffer.
16. …… refers to pixel sparing
- Resolution
- Pixmap
- Pixel depth
- Persistence
17…..… is the ratio of horizontal points to vertical points necessary to produce equal length lines in both directions.
- Resolution
- Dot Pitch
- Aspect Ratio
- Height-Width Ratio
18. The shortest distance between any two dols of the same color is called
- Resolution
- Dot Pitch
- Pixel Depth
- PPI
19. The standard aspect ratio for PC is
- 4:3
- 4
- 3:2
- 5:3
20. Higher persistence phosphorus needs …………………… refresh rate
- Lower
- Higher
- Medium
- None of the above
21. The brightness of a display is controlled by varying the voltage on the ……………..
- Focusing
- Connection pins
- Control grid
- All of these
22. Lower persistence phosphorus is used in
a. Animation b. Simple object
c. Complex object
d. All of these
23. We translate a two-dimensional point by adding?
a. Translation distances
b. Translation difference
c. X and Y
d. Only a
Explanation: We can translate a 2D point by adding translation distances dx and dy.
24. The fundamental geometric transformations are
a. Translation
b. Rotation
c. Scaling
d. All of the mentioned
Explanation: These are the fundamental geometric transformations, and other transformations are reflection and shear.
25. The rotation of the axis perpendicular to the XY plane and passes through the pivot point is known as
a. Rotation
b. Translation
c. Scaling
d. Shearing
Explanation: The rotation transformation is also explained as a rotation about a rotation axis that is perpendicular to the XY plane and passes through the pivot point.
26. What is 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
27. The ellipse can also be rotated about its center coordinates by rotating
a. Endpoints
b. Major and minor axes
c. Only a
d. None
28. What is the name of the space in which the image is displayed?
a. World coordinate system
b. Screen coordinate system
c. World window
d. Interface window
29. The process of mapping the World window in World Coordinates to the View-port is called Viewing transformation.
a. True
b. False
30. Drawing of number of copies of the same image in rows and columns across the interface window so that they cover the entire window is called ____________
a. Roaming
b. Panning
c. Zooming
d. Tiling
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