Computer Graphics CGR 22318 MCQs with answers

Today we will be discussing about MSBTE 2218 CGR MCQ we have created this MCQ for MSbte 3rd sem computer science I-scheme so mostly this Cgr MCQ we had divided in part you have to just click on next to go to next page and get MCQ most of the MCQ are been verefied by staff and not a single question is outside from the syllabus so you can study for your exam so take exams seriously. Cgr MCQ are divided by subject more MCQ we are uploading so visit daily for updates.

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Basic graphics MCQ

1. The graphics can be
a. Drawing
b. Photograph, movies
c. Simulation
d. All of these

Answer

d. All of these

2. Computer graphics was first used by a. William fetter in 1960
b. James fetter in 1969
c. James Gosling in 1991
d. John Taylor in 1980

Answer

(a)William fetter in 1960

3. Raster images are more commonly called a. Pix map
b. bitmap
c. both a & b
d. none of these

Answer

(b)bitmap

3. Raster images are more commonly called a. Pix map
b. bitmap
c. both a & b
d. none of these

Answer

(b)bitmap

4. In a graphical system, the array of pixels in the picture are stored in : (A) Memory
(B) Frame buffer
(C) Processor
(D) All of the mentioned

Answer

(B) Frame buffer

5. The maximum number of points that can be displayed without overlap on a CRT is referred to as : (A) Picture
(B) Resolution
(C) Persistence
(D) Neither (b) and (c)

Answer

(B) Resolution

6.The primary output device in a graphic system is : (A) Scanner
(B) Video monitor
(C) Neither (a) nor (b)
(D) Printer

Answer

(B) Video monitor

7. Which one is the rigid body transformation that moves objects without deformation? (A) Translation
(B) Scaling
(C) Rotation
(D) Shearing

Answer

(D) Shearing

8. Pixel mask means : (A) A string containing only 1’s
(B) A string containing only 0’s
(C) A string containing 1 and 0
(D) A string containing only 0 and 0

Answer

((C) A string containing 1 and 0

9. The process of mapping a world window in a world coordinate system to the viewport is called (A) Transformation viewing
(B) Viewport
(C) Clipping window
(D) Screen coordinate system

Answer

(A) Transformation viewing

10.The process of extracting a portion of a database or a picture inside or outside a specified region are called (A) Transformation
(B) Projection
(C) Clipping
(D) Mapping

Answer

(C) Clipping

11.The process of extracting a portion of a database or a picture inside or outside a specified region are called (A) Transformation
(B) Projection
(C) Clipping
(D) Mapping

Answer

(C) Clipping

12: What are Random scan and Raster scan techniques? A)Techniques to display an image on the screen
B)Line Drawing Techniques
C)Polygon Drawing Techniques
D)None of the above

Answer

a. Techniques to display an image on the screen
Explanation: The Random scan and rater scan are the display techniques using which (any one) an image is displayed on the screen.

13: Which among the following is best suited for a smooth line drawing on the screen? (A)Random Scan Display Algorithm (B)Raster Scan Display Algorithm (C)Both a. and b. (D)None of the above

Answer

Answer: a. Random Scan Display Algorithm
Explanation: The Random scan display algorithm is best suited for line drawing because it uses an electron beam which operates like a pencil to create a line on the screen.

14: Which of the following options is correct in accordance with the Random Scan Display Algorithm? (A)It is best suited for line drawing algorithm.
(B)It has a high resolution.
(C)It has an electron beam which strikes only that part of the screen where the drawing is needed.
(D)All of the above

Answer

AAnswer: d. All of the above
Explanation: All the given options are correct in accordance to the random scan display technique in a Cathode Ray tube.

15: Which among the following are the types of scanning or travelling of beam in a raster scan display technique? (A)Interlaced Scanning
(B)Non- Interlaced Scanning
(C)Spiral Scanning
(D)All of the Above

Answer

Answer: d. All of the above
Explanation: All the given options are correct in accordance to the random scan display technique in a Cathode Ray tube.

16 In ___ a beam of an electron is moved across the screen. It moves from top to bottom considering one row at a time. (A)Raster Scan Display
(B)Random Scan Display
(C)Both A and B
(D)None of the above mentioned

Answer

Answer: d. All of the above
Explanation: All the given options are correct in accordance to the random scan display technique in a Cathode Ray tube.

17: A beam of electron moves through each row, its intensity is alternatively turned ___ which helps to create a pattern of spots that are illuminated. (A)On and off
(B)Power interrupt
(C)Up and down
(D)All of the above mentioned

Answer

Answer: Answer: a. On and off
Explanation: A beam of electron moves through each row, its intensity is alternatively turned On and Off which helps to create a pattern of spots that are illuminated..

18: Which of the following is a better option for drawing a smooth line on the screen? (A)Raster Scan Display
(B)Random Scan Display
(C)Both A and B
(D)None of the above mentioned

Answer

Answer: b. Random Scan Display
Explanation: Since it uses an electron beam which acts like a pencil to build a line on the panel, Random scan display is ideally adapted for line drawing..

19: A 900 rotation can be done using the raster scan technique for transformation ___ (A)Using coping every row of a block into a column in a new frame buffer location
(B)Using drawing a line
(C)Using refresh a frame buffer
(D)None of the above mentioned

Answer

Answer: a. Using coping every row of a block into a column in a new frame buffer location
Explanation: A 900 rotation can be done using the raster scan technique for transformation using coping every row of a block into a column in a new frame buffer location.

20: The resolution of random scan is higher than raster scan.
True
False

Answer

Answer: a. True
Explanation: The resolution of random scan is higher as compare to raster scan..

new set

Translation MCQ CGR

Question 1: In which of the following transformation methods of Computer Graphics is the Shape of the Object not deformed? Translation
Shearing
Both a. and b.
None of the above
Answer: a. Translation
Explanation: The movement of objects without deforming the shape of object is called Translation.
 
Question 2: Translation equation: x1 = x + Tx y1 = y + Ty What is another name for the Translation pair (Tx, Ty)? Shift Vector
Shift Coordinates
Translation points
None of the above
Answer: a. Shift Vector
Explanation: The translation pair (Tx, Ty) is called as the shift vector.
 
Question 3: What value of the rotation angle rotates the object in clockwise direction? Positive Value
Negative value
Value less than 180 degree
All of the above
Answer: b. Negative Value
Explanation: The positive value of the rotation angle rotates an object in an anti-clockwise direction while the negative value of the rotation angle rotates an object in a clockwise direction.
 
Question 4: Which of the following transformation techniques is responsible for altering (either enlarging it or diminishing it) the size of the object? Translation
Rotation
Scaling
None of the above
Answer: c. Scaling Explanation: Scaling is be used to increase or decrease which is reduce the size of object. Scaling subjects to the co-ordinate points of the original object is to be changed. The scaling factor determines whether the size of the object is to be increased or decreased.
 
Question 5: "There are three basic transformation techniques in Computer Graphics to alter an object.
They are: Translation, Rotation and Scaling." Based upon the above statement, determine whether the following condition is true or false. "In all these three transformation types, the shape of the object is never deformed."
True
False
Answer: a. True
Explanation: The Shape of the object does not get deformed in any of the transformation techniques: translation, rotation or scaling. In translation, we just move the object from one place to another. In rotation, the object is rotated as it is according to the required angle of rotation. In scaling, we just enlarge or diminish the size of the object without interfering with its shape.
 
Question 6: The term "transformation" refers to the process of applying a translation to an entity. It's being repositioned around a circle lane
Repositioning it along with straight line path
Only A
None of these
Answer: b. Repositioning it along with straight line path
Explanation: An entity is converted as it is repositioned in a straight-line path from one spot to another.
 
Question 7: ___ is a rigid body transformation that enables an entity to shift without deforming.
Rotation
Translation
Only B
None of the above
Answer: c. Only B
Explanation: Translation is a deformation-free rigid body transformation that transfers objects.
 
Question 8: The colour transformation is performed in the centre of the process___ Dual color model
Single color model
Rotation color model
None of these
Answer: b. Single color model
Explanation: A single colour model is a colour transformation process.
 
Question 9: What is a necessary to specify to generate rotation? Specific distances between dx and dy
Rotation angle ϴ
Scaling
Repositioning
Answer: b. Rotation angle ϴ
Explanation: In order to rotate an object, we must specify the position of its pivot or pivot angle, either the rotation point or its height, or the magnitude of the rotation, and an angle relative to the pivot.
 
Question 10: The distances between two points (dx, dy) are referred to as translation distances (dx, dy). Translation vector or Shift vector
Translation difference
Only B
None of these
Answer: a. Translation vector or Shift vector
Explanation: The translation vector or shift vector is described as the distances (dx, dy) from the original location.
 
Question 11: The transformation set is also known as,
Translation difference
Rotation colour model
Colour Mapping Functions
None of these
Answer: c. Colour Mapping Functions
Explanation: Transformations are another name for colour mapping functions.
 
Question 12: A two-dimensional point is transformed by inserting. Translation vector
Shift vector
Translation distances
Both A and B
Answer: c. Translation distances Explanation: By inserting localization distances dx and dy we can convert 2D points.
 
Question 13: The transformation of the entity in relation to an axis is called the reflection image. Reflection
Translation
Only A
Only B
Answer: d. Only B
Explanation: A transformation that creates a mirror image of an entity relative to an axis of reflection is called a reflection.
 
Question 14: Which of the following is a matrix form of 2D translation equation is, P'=R*P
P'= P + R
P'= P / R
None of the above mentioned
Answer: a. P'=R*P
Explanation: A matrix form of 2D translation equation is P'=R*P.
 
Question 15: We set all scale factors to reduce the object's dimension. Greater than 0
Less than 1
in Between 0 and 1
None of the Above
Answer: c. in Between 0 and 1
Explanation: To scale a polygon, multiply the product of each vertex's (x, y) by the scaling factor sx and sy to get the transformation coordinates.
Question 16: The fundamental geometric transformations are as follows: Scaling
Translation
Rotation
All of the Above
Answer: c. Rotation
Explanation: Other transformations include reflection and shear, which are simple geometric transformations.
 
Question 17: A line segment of a polygon may also be referred as, Line
Vertices
Edges
All of the mentioned above
Answer: c. Edges
Explanation: A line segment of a polygon may also be referred as Edges.
 
Question 18: An efficient transformation method which produces a parallel mirror image of an object is also referred as, Rotation
Reflection
Shear
All of the mentioned above
Answer: b. Reflection
Explanation: An efficient transformation method which produces a parallel mirror image of an object is also referred as reflection.
 
Question 19: An efficient transformation method in which an object may shift form one coordinate position to any other coordinate position in a three-dimensional plane - Rotation
Translation
Scaling
All of the mentioned above
Answer: b. Translation
Explanation: Translation is an efficient transformation method in which an object may shift form one coordinate position to any other coordinate position in a three-dimensional plane.
 
Question 20: A transformation method which may cause the change in a shape of an object is referred as, Rotation
Scaling
Reflection
Shear
Answer: d. Shear
Explanation: Shearing is a transformation method which may cause the change in shape of an object.
 
Question 21: Amongst which one of the most basic transformation methods which may applied in three-dimensional planes - Rotation
Translation
Scaling
All of the mentioned above
Answer: d. All of the mentioned above
Explanation: Rotation, Translation and Scaling are some of the most basic transformation methods which may apply in three-dimensional planes.

Clipping MCQ CGR

 1. What is the primary use of clipping in computer graphics?

a) adding graphics
b) removing objects and lines
c) zooming
d) copying

Answer: b
Clarification: The primary use of clipping in computer graphics is to remove objects, lines, or line segments that are outside the viewing pane.

2. A polygon can be clipped using clipping operations.
a) True
b) False

Answer: a
Clarification: A polygon can also be clipped by specifying the clipping window. Sutherland Hodgeman polygon clipping algorithm is used for polygon clipping.

3. Which vertex of the polygon is clipped first in polygon clipping?
a) top right
b) bottom right
c) bottom left
d) top left

Answer: d
Clarification: In polygon clipping, first the polygon is clipped against the left edge of the polygon window to get new vertices of the polygon. So, it is the top left which is clipped first.

4. How many methods of text clipping are there?
a) 5
b) 4
c) 3
d) 2

Answer: c
Clarification: There are three methods for text clipping which are −
1) All or none string clipping 2) All or none character clipping 3) Text clipping.

5. A bitmap is collection of ___________________ that describes an image.
a) bits
b) colors
c) algorithms
d) pixels

Answer: d
Clarification: A bitmap is a collection of pixels that describe an image. It is a type of computer graphics that the computer uses to store and display pictures.

6. We can change the size or resize the bitmap image.
a) True
b) False

Answer: b
Clarification: We can’t resize the bitmap image. When the bitmap image is resized, the image pixels get distorted. It is one of the main disadvantages of the bitmap.

7. In line clipping, the portion of line which is _____________ of window is cut and the portion that is _____________ the window is kept.
a) outside, inside
b) inside, outside
c) exact copy, different
d) different, an exact copy

Answer: a
Clarification: Line clipping follows the same algorithm that is in the case of point clipping. So, in line clipping also, we will cut the portion of the line which is outside of the window and keep only the portion that is inside the window.

8. ‘Skala’ is an example of which type of clipping?
a) curve clipping
b) point clipping
c) polygon clipping
d) line clipping

Answer: d
Clarification: Skala is a type of clipping operation which can be used for a line or line-segment clipping against a rectangular window, as well as against a convex polygon. Its algorithm is based on homogenous co-ordinates and duality.

9. ‘Vatti’ clipping algorithm is used in _________________
a) curve clipping
b) point clipping
c) polygon clipping
d) line clipping

Answer: a
Clarification: Vatti is used in polygon clipping. It allows clipping of any number of arbitrarily shaped subject polygons. It can also be used to clip any number of arbitrarily shaped polygons.

10. The process of removal of hidden surfaces is termed as _______________
a) clipping
b) copying
c) culling
d) shorting

Answer: c
Clarification: An area which is related to the visible surface determination (VSD) is called culling. ‘Viewing frustum culling’ and ‘Backface culling’ are examples of some culling algorithms.

Curves MCQ CGR

 1. The basic parameter to curved attributes are

a) Type
b) Width
c) Color
d) All of the mentioned

Answer: d
Clarification: Type, width and colors are the basic parameters to curved attributes.

2. Raster curves of various widths can be displayed using
a) Horizontal or vertical spans
b) Horizontal spans
c) Vertical spans
d) Horizontal and vertical spans

Answer: a
Clarification: Raster curves of various widths can be displayed using Horizontal or vertical spans.

3. If the magnitude of the curve slope is lesser than 1, then
a) We can plot horizontal spans
b) We can plot vertical spans
c) Only b
d) All of the mentioned

Answer: c
Clarification: if slope magnitude 1 then we can plot vertical spans.

4. If the slope magnitude is 1, then circles, ellipse and other curves will appear
a) Thick
b) Thinnest
c) Big
d) Rough

Answer: b
Clarification: The magnitude value 1 displays thinnest curves, circles and ellipses.

5. One of the method for displaying thick curves is
a) Curve slope
b) Curve width
c) Curve cap
d) Only c

Answer: a
Clarification: This method fills the area b/w 2 parallel curves, whose separation distance=desired width.

6. The pixel masks for implementing line-type options are also used in the following algorithm to generate dashed and dotted patterns.
a) Raster line algorithm
b) Raster scan algorithm
c) Raster curve algorithm
d) Random curve algorithm

Answer: c
Clarification: Raster curve algorithm generates dashed and dotted patterns.

7. We can generate the dashes in the various octants and the circle path with vertical path using
a) Circles
b) Circle symmetry
c) Circle simmetry
d) Curve slope

Answer: b
Clarification: Circle symmetry generates dashes in the various octants, but we must shift the pixel positions to maintain the correct sequence.

8. The function of the pixel mask is
a) To display dashes and inter dash spaces according to the slope
b) To display curved attributes
c) To display the thick curves
d) None of these

Answer: a
Clarification: None.

9. If we want to display constant-length dashes, then we need to do the following.
a) We need to adjust the number of pixels plotted in each dash
b) We need to adjust the number of dots
c) We must use line-type functions
d) Neither a nor c

Answer: a
Clarification: Number of pixels plotted in each dash, will displays constant-length dashes.

10. The curves displayed with a rectangular pen will be
a) Thinner
b) Thicker and magnitude slope is 1
c) Thicker and magnitude slope >1
d) B or C

Answer: b