What does the term "clipping" refer to in computer graphics?

$($a$)$ Removing hidden surfaces in a $3$D scene.

$($b$)$ Adjusting the brightness and contrast of an image.

$($c$)$ Representing $2$D or $3$D points using an additional coordinate for transformations.

$($d$)$ Removing portions of graphical objects that fall outside a defined boundary.

Which colour model is most commonly used for digital displays like monitors and TVs$?$

$($a$)$ CMYK

$($b$)$ RGB

$($c$)$ HSL

$($d$)$ YIQ

What type of mathematical object is characterised by both magnitude and direction?

$1$

$($a$)$ Vector

$($b$)$ Matrix

$($c$)$ Scalar

$($d$)$ Point

Which of the following is a key characteristic of Bezier curves?

$($a$)$ They are defined by a series of straight line segments.

$($b$)$ They are always contained within the convex hull of their control points.

$($c$)$ They cannot be used to represent complex shapes.

$($d$)$ They are computationally expensive to render.

Which solid modelling technique involves combining simple objects using Boolean operations to create more complex shapes?

$($a$)$ Boundary representation

$($b$)$ Constructive solid geometry $($CSG$)$

$($c$)$ Sweep representation

$($d$)$ Implicit modelling

What is the primary purpose of hidden surface removal algorithms?

$($a$)$ To apply textures to $3$D models.

$($b$)$ To determine which surfaces of $3$D objects are visible from a particular viewpoint.

$($c$)$ To create smooth animations.

$($d$)$ To convert $3$D coordinates to $2$D screen coordinates.

Which line clipping algorithm divides the $2$ D space into nine regions based on the position of the line endpoints?

$($a$)$ Liang$-$Barsky algorithm

$($b$)$ Cohen$-$Sutherland algorithm

$($c$)$ Midpoint line algorithm

$($d$)$ Bresenham's line algorithm

What is the purpose of homogeneous coordinates in computer graphics?

$($a$)$ To improve colour accuracy.

$($b$)$ To represent points with an additional coordinate, simplifying transformations.

$($c$)$ To define the lighting in a scene.

$($d$)$ To create realistic shadows.