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Computer Graphics MCQ - Graphics Operations

11 A cube of side 1 unit is placed such that the origin coincides with one of its vertices and the three axes run along three of its edges. The vertex diagonally opposite to (1, 0, 1) is

12 A rectangle is bound by the lines x = 0; y = 0; x = 5 and y = 3. The line segment joining (-1, 0) and (4, 5), if clipped against this window will connect the points

The equation of the line joining (-1, 0) and (4, 5) is x - y + 1 = 0. This cuts the window boundaries x = 0 and y = 3 at the points (0, 1) and (2,3) respectively.

13 A rectangle is bound by the lines x = 0; y = 0; x = 5 and y= 3.
The line segment joining (1, 1) and (4, 2) if clipped against this window will connect the points

A point (x, y) will be inside the window, if 0 < x < 5 and 0 < y < 3. So, the points (1, 1) and (4, 2), both lie within the window. So, it is already clipped

14 A rectangle is bound by the lines x = 0; y = 0; x = 5 and y = 3
The line 2x - y + 4 = 0, if clipped against this window will connect the points

This line cuts the x-axis at (-2,0) andy-axis at (0,4). So, it lies totally outside the window and so cannot be clipped.

15 Find the incorrect statement(s).

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Question:

(2,4) is a point on a circle that has centre at the origin. Which of the following point(s) is/are also on the circle?

A. (2, -4)
B. (-2, 4)
C. (4, -2)
D. All of these

Correct answer: D

Explanation:

Since the circle with centre at the origin, is symmetric about the X-axis, Y-axis, the line X = Y and the line X = - Y, the reflection…

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