Computer Graphics MCQs with answers Page - 18

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A

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Q. In _____ clipping , cliiping routine can be performed along any line.

  • (A) viewport
  • (B) window
  • (C) generalised
  • (D) none

A

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Q. Generalised clipping algorithm deals with clipping against _____ line.

  • (A) horizontal
  • (B) veritical
  • (C) arbitrary
  • (D) both horizontal & vertical

A

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Q. What will be the output set after clipping left and clipping right?

  • (A) 1 2 3 4 6 7 8 9 10 11 11’ and 1’2 3 4 5’ 6’ 7 8 9 10 11 11’
  • (B) 1’ 2 3 4 6 7 8 9 10 11 11’ and 1 1’ 2 3 4 6 7 8 9 10 11 11’
  • (C) 1 2 3 4 6 7 8 9 10 11 11’ and 1 1’ 2 3 4 6 7 8 9 10 11 11’
  • (D) 1’ 2 3 4 6 7 8 9 10 11 11’ and 2 3 4 5’ 6’ 7 8 9 10 11 11’ 1’

A

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Q. What will be the input set for clipping left and clipping right respectively?

  • (A) 1 2 3 4 6 7 8 9 10 11 and 1’ 2 3 4 6 7 8 9 10 11 11’
  • (B) 1 2 3 4 6 7 8 9 10 11 and 1’2 3 4 5’ 6’ 7 8 9 10 11 11’
  • (C) 1’ 2 3 4 6 7 8 9 10 11 11’ and 1 1’ 2 3 4 6 7 8 9 10 11 11’
  • (D) 1 2 3 4 6 7 8 9 10 11 11’ and 1 1’ 2 3 4 6 7 8 9 10 11 11’

A

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Q. In 8 connected region if one pixel is (x,y) then remaining neighboring pixels

  • (A) (x+1, y ) (x-1,y) (x,y+1) (x,y-1) (x-1,y-1) (x-1, y+1) (x+1, y-1) (x+1, y+1)
  • (B) (x+1, y ) (x-1,y) (x,y+1) (x,y) (x-1,y-1) (x-1, y+1) (x+1, y-1) (x+1, y+1)
  • (C) (x-1,y-1) (x-1, y+1) (x+1, y-1) (x+1, y+1)
  • (D) (x+1, y ) (x-1,y) (x,y+1) (x,y-1) (x-1,y-1)

A

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Q. What will be input set to clipping top and clipping bottom respectively?

  • (A) 2 3 4 5’ 6’ 7 8 9 10 11 11’ 1’ and 3’ 4’ 4 5’ 6’ 7 8 9 10 11 11’ 1’ 2
  • (B) 1 2 3 4 6 7 8 9 10 11 11’ and 1 1’ 2 3 4 6 7 8 9 10 11 11’
  • (C) 2 3 4 5’ 6’ 7 8 9 10 11 11’ 1’ and 1 1’ 2 3 4 6 7 8 9 10 11 11’
  • (D) 1 1’ 2 3 4 6 7 8 9 10 11 11’ and 3’ 4’ 4 5’ 6’ 7 8 9 10 11 11’ 1’ 2

A

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Q. What will be clipped polygon vertices?

  • (A) 4’ 4 ‘5’ 6’ 7 7’ 8’ 9 9’ 10’ 11 11’ 1’ 2 3’
  • (B) 1’2 3’ 4’4 5’6’ 7 7’8’ 9’ 10’ 11 11’
  • (C) both a and b
  • (D) neither a or b

A

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Q. What will be the input set for clipping right and for clipping top respectively?

  • (A) 1’ 2 3 4 6 7 8 9 10 11 11’ and 2 3 4 5’ 6’ 7 8 9 10 11 11’ 1’
  • (B) 1 2 3 4 6 7 8 9 10 11 11’ and 1’2 3 4 5’ 6’ 7 8 9 10 11 11’
  • (C) 1’ 2 3 4 6 7 8 9 10 11 11’ and 1 1’ 2 3 4 6 7 8 9 10 11 11’
  • (D) 1 2 3 4 6 7 8 9 10 11 11’ and 1 1’ 2 3 4 6 7 8 9 10 11 11’

A

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Q. Following are coordinates of clipping window : Lower Left Corner (10,10) and Upper Right Corner (1,1). Whether a point at (5,50) is visible or not?

  • (A) visible
  • (B) partially visible
  • (C) completely exterior
  • (D) none of the above

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Q. Following are coordinates of clipping window : Lower Left Corner (10,10) and Upper Right Corner (1,1). Whether a point at (75,90) is visible or not?

  • (A) visible
  • (B) partially visible
  • (C) completely exterior
  • (D) none of the above

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