MCQ | Types of Transformations (Translation, Rotation and Scaling) in Computer Graphics

Multiple choice questions and answers (MCQ) based on the Types of Transformations (Translation, Rotation and Scaling) in computer graphics with 4 choices, correct answer and explanation.
Submitted by Monika Sharma, on October 12, 2020

Question 1: In which of the following transformation methods of Computer Graphics is the Shape of the Object not deformed?

  1. Translation
  2. Shearing
  3. Both a. and b.
  4. None of the above

Answer: a. Translation

Explanation:

The movement of objects without deforming the shape of object is called Translation.


Question 2: Translation equation:
x1 = x + Tx
y1 = y + Ty
What is another name for the Translation pair (Tx, Ty)?

  1. Shift Vector
  2. Shift Coordinates
  3. Translation points
  4. None of the above

Answer: a. Shift Vector

Explanation:

The translation pair (Tx, Ty) is called as the shift vector.


Question 3: What value of the rotation angle rotates the object in clockwise direction?

  1. Positive Value
  2. Negative value
  3. Value less than 180 degree
  4. All of the above

Answer: b. Negative Value

Explanation:

The positive value of the rotation angle rotates an object in an anti-clockwise direction while the negative value of the rotation angle rotates an object in a clockwise direction.


Question 4: Which of the following transformation techniques is responsible for altering (either enlarging it or diminishing it) the size of the object?

  1. Translation
  2. Rotation
  3. Scaling
  4. None of the above

Answer: c. Scaling

Explanation:

Scaling is be used to increase or decrease which is reduce the size of object. Scaling subjects to the co-ordinate points of the original object is to be changed. The scaling factor determines whether the size of the object is to be increased or decreased.


Question 5: "There are three basic transformation techniques in Computer Graphics to alter an object. They are: Translation, Rotation and Scaling."
Based upon the above statement, determine whether the following condition is true or false.
"In all these three transformation types, the shape of the object is never deformed."

  1. True
  2. False

Answer: a. True

Explanation:

The Shape of the object does not get deformed in any of the transformation techniques: translation, rotation or scaling. In translation, we just move the object from one place to another. In rotation, the object is rotated as it is according to the required angle of rotation. In scaling, we just enlarge or diminish the size of the object without interfering with its shape.







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