Computer Graphics MCQs with Answers
Practice important Computer Graphics MCQs with answers and explanations.
Chapter: 7
Q181:
Sampling switches from x to y direction when ______
A. ry²x² = rx²y²
B. x = y
C. x > y
D. rx = ry
Correct Answer:
A
Chapter: 7
Q182:
At starting point in region 1, the coordinate is
A. (0, rx)
B. (rx, 0)
C. (0, ry)
D. (ry, ry)
Correct Answer:
C
Chapter: 7
Q183:
The slope formula used to detect region change is dy/dx = ______
A. 2rx²y / ry²x²
B. -2ry²x² / 2rx²y²
C. rx² / ry²
D. ry² / rx²
Correct Answer:
B
Chapter: 7
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
Correct Answer:
A
Chapter: 7
Q185:
Pk+1 = Pk + 2ry²(xk + 1) + ry² is valid when ______.
A. Pk = 0
B. Pk > 0
C. Pk < 0
D. Always
Correct Answer:
C
Chapter: 7
Q186:
When Pk > 0, which y-value is used in next step?
A. yk
B. yk + 1
C. yk – 1
D. yk + 2
Correct Answer:
C
Chapter: 7
Q187:
The initial decision parameter P10 is computed at
A. (0, rx)
B. (rx, 0)
C. (0, ry)
D. (ry, ry)
Correct Answer:
C
Chapter: 7
Q188:
______ is an algorithm for drawing ellipses using decision parameters.
A. Bresenham’s Algorithm
B. DDA
C. Midpoint Ellipse Algorithm
D. Scanline Fill
Correct Answer:
C
Chapter: 7
Q189:
Kepler introduced the concept of ______ in ellipses.
A. Perihelion
B. Focus
C. Radius
D. Arc
Correct Answer:
B
Chapter: 7
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)
Correct Answer:
B
Chapter: 7
Q191:
The function f_ellipse(x,y) = 0 implies the point is
A. Inside ellipse
B. On ellipse boundary
C. Outside ellipse
D. At center
Correct Answer:
B
Chapter: 7
Q192:
What determines the orientation of a hyperbola?
A. Relative size of a and b
B. Value of c
C. Variable in the positive term
D. Sign of the equation
Correct Answer:
C
Chapter: 7
Q193:
Which conic section approaches asymptotes as part of its graph?
A. Ellipse
B. Hyperbola
C. Parabola
D. Circle
Correct Answer:
B
Chapter: 7
Q194:
In the equation x²/a² - y²/b² = 1, the hyperbola opens along which axis?
A. Vertical
B. Horizontal
C. Diagonal
D. Cannot be determined
Correct Answer:
B
Chapter: 7
Q195:
What is the distance of each vertex from the center of a hyperbola?
A. a
B. b
C. c
D. b²
Correct Answer:
A
Chapter: 7
Q196:
The distance between foci of a hyperbola is always ______ than the distance between vertices.
A. Equal
B. Less
C. Greater
D. Undefined
Correct Answer:
C
Chapter: 7
Q197:
In hyperbola, the value of eccentricity 'e' is always
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Equal to 0
Correct Answer:
C
Chapter: 7
Q198:
The standard equation of a horizontal hyperbola centered at origin is
A. (x²/b²) - (y²/a²) = 1
B. (x²/a²) - (y²/b²) = 1
C. (y²/a²) - (x²/b²) = 1
D. (xy/a) = 1
Correct Answer:
B
Chapter: 7
Q199:
If the variable y is in the positive term of a hyperbola's equation, the transverse axis is
A. Vertical
B. Horizontal
C. Diagonal
D. None of the above
Correct Answer:
A
Chapter: 7
Q200:
What is the equation of a hyperbola with center at (h, k) and horizontal transverse axis?
A. (x²/a²) - (y²/b²) = 1
B. ((x-h)²/a²) - ((y-k)²/b²) = 1
C. ((y-k)²/a²) - ((x-h)²/b²) = 1
D. (x² - y²)/(a²+b²) = 1
Correct Answer:
B