Computer Graphics MCQs with Answers
Practice important Computer Graphics MCQs with answers and explanations.
Chapter: 38
Q1281:
The Bezier curve's degree for n+1 control points is _______.
A. n
B. n-1
C. n+1
D. 2n
Correct Answer:
B
Chapter: 38
Q1282:
The term 'Bernstein polynomials' in Bezier curve theory refers to _______.
A. Basis functions
B. Control points' locations
C. Curve tangents
D. Degree of the curve
Correct Answer:
A
Chapter: 38
Q1283:
A Bezier curve of degree 2 is defined by how many control points?
A. 2
B. 3
C. 4
D. 5
Correct Answer:
B
Chapter: 38
Q1284:
In Equation 24, the basis function B₂,₂(u) for a second-degree Bezier curve is equal to _______.
A. u²
B. u(1-u)
C. 1-u
D. 2u(1-u)
Correct Answer:
A
Chapter: 38
Q1285:
A cubic Bezier curve can represent curves that twist in _______.
A. The xy-plane
B. The yz-plane
C. Space
D. The xz-plane
Correct Answer:
C
Chapter: 38
Q1286:
The shape of a Bezier curve can be modified by changing the _______.
A. Control points
B. Parametric variables
C. Tangent lines
D. Degree of the curve
Correct Answer:
A
Chapter: 38
Q1287:
The construction of a cubic Bezier curve involves how many steps?
A. 1
B. 2
C. 3
D. 4
Correct Answer:
C
Chapter: 38
Q1288:
In Equation 19, the basis functions Bₙᵢ(u) are derived from _______.
A. Binomial coefficients
B. Factorial numbers
C. Exponential functions
D. Polynomial functions
Correct Answer:
A
Chapter: 38
Q1289:
The control points of a Bezier curve influence the curve's _______.
A. Shape and direction
B. Degree and position
C. Speed and timing
D. Tangents and inflection points
Correct Answer:
A
Chapter: 39
Q1290:
Which of the following is important for consistent polygon orientation in 3D modeling?
A. Correct vertex ordering
B. Lighting direction
C. Polygon color
D. Edge detection
Correct Answer:
A
Chapter: 39
Q1291:
What is the primary concern when subdividing a surface into non-triangular polygons?
A. Polygons might not be planar
B. Colors are inconsistent
C. Lighting becomes uneven
D. Rendering time decreases
Correct Answer:
A
Chapter: 39
Q1292:
In OpenGL, what happens if polygons are not subdivided properly?
A. They might appear jagged
B. They always render correctly
C. Rendering becomes faster
D. They become non-cullable
Correct Answer:
A
Chapter: 39
Q1293:
A surface with only triangular polygons is guaranteed to be _______.
A. Planar
B. Non-planar
C. Convex
D. Non-convex
Correct Answer:
A
Chapter: 39
Q1294:
When constructing a closed surface in OpenGL, what should be checked to avoid gaps or cracks?
A. Ensure the starting and ending coordinates are identical
B. Ensure all vertices are aligned
C. Ensure no overlapping polygons
D. Ensure color consistency
Correct Answer:
A
Chapter: 39
Q1295:
The icosahedron is a Platonic solid composed of _______.
A. 20 faces and 12 vertices
B. 12 faces and 20 vertices
C. 12 faces and 30 vertices
D. 20 faces and 30 vertices
Correct Answer:
A
Chapter: 39
Q1296:
Which mathematical constant is defined as `PI` in the code example for drawing an icosahedron?
A. 3.14159265
B. 3.14
C. 2.71828
D. 1.61803
Correct Answer:
A
Chapter: 39
Q1297:
What does the function `glVertex2f()` do in OpenGL?
A. Specifies a 2D vertex for rendering
B. Specifies a 3D vertex for rendering
C. Defines a color for the vertex
D. Calculates the normal vector
Correct Answer:
B
Chapter: 39
Q1298:
What is the purpose of the `glNormal3fv()` function in OpenGL?
A. It sets the normal vector for lighting calculations
B. It sets the color of the vertex
C. It draws the vertex to the screen
D. It calculates the vertex position
Correct Answer:
A
Chapter: 39
Q1299:
In the context of 3D models, what is a trade-off when subdividing polygons?
A. Between display speed and image quality
B. Between polygon color and texture quality
C. Between texture resolution and lighting
D. Between polygon number and depth precision
Correct Answer:
A
Chapter: 39
Q1300:
What is the role of `normcrossprod()` in calculating normal vectors for surfaces?
A. It calculates the cross product of two vectors
B. It normalizes a vector
C. It draws the vertices
D. It sets the light intensity
Correct Answer:
A