21) Hue of color is related to?
(A) Luminance
(B) Saturation
(C) Incandescence
(D) Wavelength
22) The phenomenon of having a continuous glow of a beam on the screen even after it is removed is called as?
(A) Fluorescence
(B) Persistence
(C) Phosphorescence
(D) Incandescence
23) The line 2x - y + 4 = 0, if clipped against this window will connect the points?
(A) (0, 1) and (3, 3)
(B) (0, 1) and (2, 3)
(C) (1, 2) and (4, 2)
(D) None of above
24) Reflection of a point about x-axis, followed by a counter-clockwise rotation of 900, is equivalent to reflection about the line?
(A) x = -y
(B) y = -x
(C) x = y
(D) x + y = 1
25) The point at which a set of projected parallel lines appear to coverage is called as a?
(A) convergence point
(B) vanishing point
(C) point of illusion
(D) point of delusion
26) The basic element of a picture in volume graphics is?
(A) pixel
(B) volsel
(C) voxel
(D) None of above
27) Let R be the radius of a circle. The angle subtended by an arc of length R at the center of
the circle is ?
(A) 1 degree
(B) 1 radian
(C) 45 degree
(D) None of these
28) A circle, if scaled only in one direction becomes a ?
(A) parabola
(B) hyperbola
(C) ellipse
(D) remains a circle
29) A bilinear transformation can be simulated by the transformation?
(A) transformation, rotation and stretching
(B) translation and rotation
(C) rotation, stretching and inversion
(D) rotation, stretching, inversion and translation
30) The anti - aliasing technique which allows shift of 1/4,1/2 and 3/4 of a pixel diameter
enabling a closer path of a line is?
(A) Pixel phasing
(B) Filtering
(C) Intensity compensation
(D) Sampling technique