Computer Graphics MCQs with Answers
Practice important Computer Graphics MCQs with answers and explanations.
Multiple Choice Questions
Q181: Sampling switches from x to y direction when ______
- A: ry²x² = rx²y²
- B: x = y
- C: x > y
- D: rx = ry
View Answer
A
Q182: At starting point in region 1, the coordinate is
- A: (0, rx)
- B: (rx, 0)
- C: (0, ry)
- D: (ry, ry)
View Answer
C
Q183: The slope formula used to detect region change is dy/dx = ______
- A: 2rx²y / ry²x²
- B: -2ry²x² / 2rx²y²
- C: rx² / ry²
- D: ry² / rx²
View Answer
B
Q184: The recursive equation for decision parameter Pk+1 depends on ______.
- A: Sign of previous Pk
- B: x only
- C: y only
- D: Constant slope
View Answer
A
Q185: Pk+1 = Pk + 2ry²(xk + 1) + ry² is valid when ______.
- A: Pk = 0
- B: Pk > 0
- C: Pk < 0
- D: Always
View Answer
C
Q186: When Pk > 0, which y-value is used in next step?
- A: yk
- B: yk + 1
- C: yk – 1
- D: yk + 2
View Answer
C
Q187: The initial decision parameter P10 is computed at
- A: (0, rx)
- B: (rx, 0)
- C: (0, ry)
- D: (ry, ry)
View Answer
C
Q188: ______ is an algorithm for drawing ellipses using decision parameters.
- A: Bresenham’s Algorithm
- B: DDA
- C: Midpoint Ellipse Algorithm
- D: Scanline Fill
View Answer
C
Q189: Kepler introduced the concept of ______ in ellipses.
- A: Perihelion
- B: Focus
- C: Radius
- D: Arc
View Answer
B
Q190: The midpoint used for pixel selection is at
- A: (xk, yk + 1/2)
- B: (xk+1, yk – 1/2)
- C: (xk+1, yk + 1/2)
- D: (xk, yk – 1/2)
View Answer
B