Computer Graphics MCQs with Answers
Practice important Computer Graphics MCQs with answers and explanations.
Multiple Choice Questions
Q171: What are the coordinates of foci in a standard ellipse centered at origin?
- A: (a, b) and (-a, -b)
- B: (0, c) and (0, -c)
- C: (-c, 0) and (c, 0)
- D: (c, c) and (-c, -c)
View Answer
C
Q172: What does 'b' represent in an ellipse equation?
- A: Radius
- B: Base
- C: Semi-major axis
- D: Semi-minor axis
View Answer
D
Q173: The relation between a, b, and c in ellipse is:
- A: a² = b² + c²
- B: a² = b² - c²
- C: b² = a² + c²
- D: c² = a² - b²
View Answer
A
Q174: If an ellipse is centered at (x₀, y₀), the equation becomes
- A: Shifted in x only
- B: Shifted in y only
- C: Shifted in both x and y
- D: Unchanged
View Answer
C
Q175: The parametric equation x = xc + rx cos θ represents
- A: x in rectangular coordinates
- B: x in polar coordinates
- C: Radius
- D: Directrix
View Answer
B
Q176: The equation x = xc + rx cos θ and y = yc + ry sin θ is used in which method?
- A: Midpoint line drawing
- B: Parametric ellipse drawing
- C: DDA
- D: Bresenham’s algorithm
View Answer
B
Q177: The midpoint ellipse function is defined as ______.
- A: rx²y + ry²x – 1
- B: ry²x² + rx²y² – rx²ry²
- C: rx² + ry² – 2x
- D: rx² + ry² – x²y²
View Answer
B
Q178: f_ellipse(x,y) > 0 means the point is
- A: Inside the boundary
- B: On the boundary
- C: Outside the boundary
- D: At the origin
View Answer
C
Q179: In region 1 of midpoint ellipse algorithm, which direction is sampled?
- A: y-direction
- B: x-direction
- C: both x and y
- D: diagonal
View Answer
B
Q180: In region 2 of midpoint ellipse algorithm, which direction is sampled?
- A: x-direction
- B: diagonal
- C: y-direction
- D: both
View Answer
C