About Computer Graphics

Following are some of the multiple choice questions on the Computer Graphics with answers that will help the students in developing their knowledge.

Computer Graphics MCQ

1. Initial decision parameter P0 in Mid Point Circle drawing algorithm is

  • P0=1-R
  • P0=1-R2
  • P0=1 + R
  • P0= 1+R2

2. After we export a file to bitmap, we can edit the bitmap graphic easily.

  • TRUE
  • FALSE

3. Which is the best line algorithm to balance the processing load among the processers?

  • Parallel line algorithm
  • DDA line algorithm
  • Bresenham’s line algorithm
  • Position Bresenham’s line algorithm

4. To apply the midpoint method, we define

  • circle(x, y)= x2+ y2- r2
  • circle(x, y)= x+ y2- r2
  • circle(x, y)= x2– y2- r2
  • circle(x, y)= x2+ y2- z2

5. A bitmap is collection of ___________________ that describes an image.

  • bits
  • colors
  • algorithms
  • pixels

6. In line clipping, the portion of line which is _____________ of window is cut and the portion that is _____________ the window is kept.

  • outside, inside
  • inside, outside
  • exact copy, different
  • different, an exact copy

7. A polygon can be clipped using clipping operations.

  • True
  • False

8. Cohen-Sutherland clipping is an example of _________________

  • polygon clipping
  • text clipping
  • line clipping
  • curve clipping

9. The Cohen-Sutherland algorithm divides the region into _____ number of spaces.

  • 8
  • 6
  • 7
  • 9

10. The centre region of the screen and the window can be represented as________

  • 0000
  • 1111
  • 0110
  • 1001

11. If both codes are 0000, (bitwise OR of the codes yields 0000) line lies __________________ the window.

  • completely outside
  • half inside half outside
  • completely inside
  • can’t say anything

12. Any convenient co-ordinate system or Cartesian co-ordinates which can be used to define the picture is called ___________

  • spherical co-ordinates
  • vector co-ordinates
  • viewport co-ordinates
  • world co-ordinates

13. Which of the following co-ordinates are NOT used in 2d viewing transformation?

  • modelling co-ordinates
  • vector co-ordinates
  • viewing co-ordinates
  • device co-ordinates

14. An outcode can have ____ bits for two-dimensional clipping and ____ bits for three-dimensional clipping.a) b) c) d)

  • 6,8
  • 2,4
  • 4,6
  • 1,3

15. The process of elimination of parts of a scene outside a window or a viewport is called _____________

  • clipping
  • editing
  • plucking
  • cutting

16. For a point to be clipped, which of the following conditions must be satisfied by the point?

  • ywmin = y = ywmax
  • xwmin > x > xwmax
  • xwmin = x = xwmax
  • xwmin < x < xwmax

17. To generate a rotation , we must specify

  • Rotation angle ϴ
  • Distances dx and dy
  • Rotation distance
  • All of the mentioned

18. The coordinates of the point in after rotation in anticlockwise direction

  • X’=r cos (Ф +ϴ) and Y’=r cos (Ф +ϴ)
  • X’=r cos (Ф +ϴ) and Y’=r sin (Ф +ϴ)
  • X’=r cos (Ф -ϴ) and Y’=r cos (Ф -ϴ)
  • X’=r cos (Ф +ϴ) and Y’=r sin (Ф -ϴ)

19. The two-dimensional rotation equation in the matrix form is

  • P’=R*P
  • P’=P+T
  • P’=P*P
  • P’=R+P

20. Positive values for the rotation angle ϴ defines

  • Counterclockwise rotations about the end points
  • Counterclockwise translation about the pivot point
  • Counterclockwise rotations about the pivot point
  • Negative direction

21. In a reflection, by how much angle is the object rotated?

  • 45 degree
  • 180 degree
  • 90 degree
  • 360 degree

22. Which of the following represents shearing?

  • (x, y) → (x cos(θ)+y sin(θ), -x sin(θ)+y cos(θ))
  • (x, y) → (ax, by)
  • (x, y) → (x+ay, y+bx)
  • (x, y) → (x+a, y+b)

23. Which of this is compulsory for 2D reflection.

  • Origin
  • Reflection axis
  • Co-ordinate axis.
  • Reflection plane.

24. Two successive translations are___________________a) b) c) d)

  • Subtractive
  • Additive
  • Inverse
  • Multiplicative

25. Two successive rotations are___________________

  • Additive
  • Subtractive
  • Inverse
  • Multiplicative

26. Which of the following is NOT correct? (A, B and C are matrices)

  • 1.A = A.1
  • C(A+B) = C.A + C.B
  • A.B.C = (A.B).C = A.(B.C)
  • A.B = B.A

27. Which transformation distorts the shape of an object such that the transformed shape appears as if the object were composed of internal layers that had been caused to slide over each other?

  • Scaling down
  • Shearing
  • Scaling up
  • Rotation

28. Reflection about the line y=0, the axis, is accomplished with the transformation matrix with how many elements as ‘0’?

  • 8
  • 9
  • 4
  • 6

29. The matrix representation for scaling in homogeneous coordinates is

  • P’=S*P
  • P’=R*P
  • P’=dx+dy
  • P’=S*S

30. What is the use of homogeneous coordinates and matrix representation?

  • To scale
  • To rotate
  • To treat all 3 transformations in a consistent way
  • To shear the object

31. We can combine the multiplicative and translational terms for 2D into a single matrix representation by expandinga) 2 by 2 matrix into 4*4 matrixb) 2 by 2 matrix into 3*3c) 3 by 3 matrix into 2 by 2d) Only c

  • 2 by 2 matrix into 4*4 matrix
  • 2 by 2 matrix into 3*3
  • 3 by 3 matrix into 2 by 2
  • Only C

32. Which is not a type of 3D projection

  • Perspective
  • Orthogrpahic
  • Isomorphic
  • Progressive

33. Circle is represented using equation

  •  f(x,y)=x2 + y2 −r2f\left(x,y\right)=x^2\ +\ y^2\ -r^2f(x,y)=x2 + y2 −r2  
  •  f(x,y)=x2 + y2 +r2f\left(x,y\right)=x^2\ +\ y^2\ +r^2f(x,y)=x2 + y2 +r2  
  •  f(x,y)=x2 + y2 −rf\left(x,y\right)=x^2\ +\ y^2\ -r^{ }f(x,y)=x2 + y2 −r  
  •  f(x,y)=x2 + y2  +rf\left(x,y\right)=x^2\ +\ y^2\ \ +r^{ }f(x,y)=x2 + y2  +r  

34. According to 8 Octant symmetry rule, Which of the following will be a point in 5th octant corresponding to given point P (a,b) in 1st octant of circle.

  • (a, -b)
  • (-a, -b)
  • (b, a)
  • (-a, b)

35. Is this a Font sample?

  • Yes
  • No

36. What are the four colors in CMYK?

  • Cyan, Red, Black and Green.
  • Magenta, Purple, Cyan, Orange.
  • Orange, Yellow, Cyan, Red.
  • Cyan, Magenta, Yellow, Black.

37. What does JPG stand for?

  • Joint Photography Experts Group.
  • Joint Pictures Excellent Grade.
  • Join Pictures Enter Graphics.
  • Joined Photographs Excel Graphs

38. What is the HEX color code for Black?

  • #111111
  • #000000
  • #999999
  • #101010

39. What is the oldest Graphic File type?

  • JPEG
  • PNG
  • BPM
  • TIFF

40. What is the RGB code for White?

  • (255, 255, 255)
  • (256, 256, 256)
  • (200, 200, 200)
  • (0, 0, 0)

41. Which are Windows Font File types?

  • TTF, OFT
  • OTF, TTF
  • TTL, OLF
  • OLP, TTP

42. How many Fonts in a Font File?

  • 2
  • many
  • 1
  • 3

43. What Graphic File type allows transparency?

  • JPEG
  • TIFF
  • BMP
  • PNG

44. What does PNG stand for?

  • Pictures aNd Graphics.
  • Portable Network Graphics
  • Portable New Graphics
  • Pictures Not Graphics

45. What does PPI stand for?

  • Process Post Inspect.
  • Print Per Inch.
  • Pixels Per Inch.
  • Pixels Print Image.

46. What is the best size resolution for printing?

  • 72 PPI
  • 100 PPI
  • 1500 PPI
  • 300 PPI

47. Do Cameras store Pictures in RAW format?

  • Yes
  • No

48. Which Graphic File type permits animation?

  • JPEG
  • GIF
  • TIFF
  • PNG

49. Which HEX color code is closer to black?

  • #F5FA11
  • #5F2871
  • #DA0901
  • #191919

50. Is TIFF a graphic file type or a font for the Toronto International Film Festival?

  • Graphic File type.
  • Toronto International Film Festival

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