Title MCQ Unit3 Clipping.pdf ✅

BCA 5th Sem Computer Graphics and Animation Mechi Multiple Campus 1 Computer Graphics and Animation MCQ Questions and Answers Unit:3 Clipping Multiple Choice Questions and Answers 1. The object space or the space in which the application model is defined is called? (a) World Co-ordinate system (b) Screen Co-ordinate system (c) World Window (d) Interface Window 2. What is the rectangle in the world defining the region that is to be displayed? (a) World Co-ordinate system (b) Screen Co-ordinate system (c) World Window (d) Interface Window 3. What is the name of the space in which the image is displayed? (a) World Co-ordinate system (b) Screen Co-ordinate system (c) World Window (d) Interface Window 4. The window opened on the raster graphics screen in which the image will be displayed? (a) World Co-ordinate system (b) Screen Co-ordinate system (c) World Window (d) Interface Window 5. Window defines : (a) Where to display (b) What to display
BCA 5th Sem Computer Graphics and Animation Mechi Multiple Campus 2 (c) Why to display (d) None of these 6. Viewport defines : (a) Where to display (b) What to display (c) Why to display (d) None of these 7. In 2D viewing we have : (a) 3D window and 2D viewport (b) 3D window and 3D viewport (c) 2D window and 2D viewport (d) 2D window and 3D viewport 8. By changing the dimension of the viewport ,the ---------- and --------------of the objects being displayed can be manipulated. (a) Number of Pixels and Image quality (b) X Co-ordinate and Y Co-ordinate (c) Size and Proportions (d) All of these 9. Which of the following ports resembles the coordinates from the real-world system? (a) Window port (b) View Port (c) Universal Port (d) None of the above 10. The process of transforming a 2D world-coordinate object to device coordinates is termed as: (a) Window to Viewport Transformation (b) Viewing Transformation (c) Windowing Transformation
BCA 5th Sem Computer Graphics and Animation Mechi Multiple Campus 3 (d) All of the above 11. Can we represent multiple scenes from a real-world coordinate system on the viewport? If yes, how? (a) By using multiple viewports (b) By using multiple window ports (c) Both a. and b. (d) No, we cannot represent multiple scenes from a real-world coordinate system on the viewport 12. Which of the following are true with respect to the Window Port in computer graphics? (a) It represents real world coordinate system. (b) A window port can be defined with the help of a GWINDOW statement. (c) Window port is the coordinate area specially selected for the display. (d) All of the above 13. The scale factor of viewport transformation for x co-ordinate is ________ (a) Sx = (svmax — svmin)/ (swmax — swmin) (b) Sx = (svmax — svmin)/ (swmax + swmin) (c) Sx = (svmin — svmax)/ (swmax — swmin) (d) Sx = (svmax + svmin)/ (swmax — swmin) 14. For a 2d transformation viewing, in how many ways a clipping algorithm can be applied? (a) 3 (b) 2 (c) 1 (d) 5 Note: Two ways are: world-coordinate clipping and viewport clipping 15. Which of the following co-ordinates are NOT used in 2d viewing transformation? (a) modelling co-ordinates
BCA 5th Sem Computer Graphics and Animation Mechi Multiple Campus 4 (b) viewing co-ordinates (c) vector co-ordinates (d) device co-ordinates 16. The process of elimination of parts of a scene outside a window or a viewport is called ________ . (a) cutting (b) plucking (c) clipping (d) editing 17. Clipping in computer graphics is primarily used for - (a) zooming (b) copying (c) removing objects and lines (d) All of the above 18. Clipping is used for : (a) The display small size image (b) The display large size image (c) The display part of an image (d) All of these 19. Which is not a line clipping algorithm? (a) NLN algorithm (b) Cohen-Sutherland algorithm (c) Weiler-Atherton algorithm (d) All of these 20. The Cohen-Sutherland algorithm divides the two-dimensional space in how many regions? (a) 4 (b) 8