Reflection MCQ Questions And Answers
Reflection MCQs : This section focuses on "Reflection" in Computer Graphics. These Multiple Choice Questions (MCQ) should be practiced to improve the Computer Graphics skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations.
1. ____________ is a transformation which produces a mirror image of an object.
A. Translation
B. Reflection
C. Scaling
D. Rotation
View Answer
Ans : B
Explanation: Reflection is a transformation which produces a mirror image of an object.
2. The mirror image can be either about ______.
A. x-axis
B. y-axis
C. x-axis or y-axis
D. None of the above
View Answer
Ans : C
Explanation: The mirror image can be either about x-axis or y-axis.
3. The object is rotated by?
A. 45°
B. 90°
C. 135°
D. 180°
View Answer
Ans : D
Explanation: The object is rotated by180°.
4. How many types of reflection?
A. 1
B. 2
C. 3
D. 4
View Answer
Ans : D
Explanation: Types of Reflection: Reflection about the x-axis, Reflection about the y-axis, Reflection about an axis perpendicular to xy plane and passing through the origin and Reflection about line y=x
5. The object can be reflected about x-axis with the help of which matrix?
A. Reflection about the x-axis
B. Reflection about the y-axis
C. Reflection about an axis perpendicular to xy plane and passing through the origin
D. Reflection about line y=x
View Answer
Ans : A
Explanation: Reflection about x-axis: The object can be reflected about x-axis with the help of the following matrix
6. Reflection about line y=x object may be reflected about line y = x with the help of following transformation matrix.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
View Answer
Ans : A
Explanation: Reflection about line y=x object may be reflected about line y = x with the help of following transformation matrix.
7. How many types of reflection is possible in a 3-dimensional environment?
A. 1
B. 3
C. 6
D. 9
View Answer
Ans : B
Explanation: There are three different types of reflections that are possible in a 3-dimensional environment. These reflections are relative to XY plane, reflection relative to YZ plane and reflection reflective to ZX plane.
8. If two pure reflections about a line passing through the origin are applied successively the result is ___________________
A. Quarter rotation
B. Half rotation
C. Pure rotation
D. True reflection
View Answer
Ans : A
Explanation: When we apply reflection one time, it rotates the image by 180 degrees. So, if we repeat it 2 times the total reflection will be of 360 degrees.
9. What is the determinant of the pure reflection matrix?
A. 1
B. 0
C. -1
D. 2
View Answer
Ans : C
Explanation: The determinant of the pure reflection matrix is -1
10. Reflection about y-axis object can be reflected about y-axis with the help of following transformation matrix.
A. Yes
B. No
C. Can be yes or no
D. Can not say
View Answer
Ans : A
Explanation: Yes, Reflection about y-axis object can be reflected about y-axis with the help of following transformation matrix.
Discussion