Q59.Marks: +2.0UGC NET Paper 2: Computer Science 2020
Match List - I with List - II. List I gives 3 × 3 matrices representing 2D transformations and List - II shows the corresponding transformation diagrams.
Choose the correct answer from the options given below:
1.A - IV, B - II, C - III, D - I
2.A - IV, B - III, C - II, D - I
3.A - III, B - II, C - IV, D - I
4.A - II, B - IV, C - III, D - I✓ Correct
Solution
The correct answer is option 4.
Key Points
\(\left[ {\begin{array}{*{20}{c}} 2&0&0\\ 0&2&0\\ 0&0&1 \end{array}} \right]\) It is the scaling matrix. 2 in x and y-direction by a factor,
Hence A-II is the correct pair. \(\left[ {\begin{array}{*{20}{c}} 1&0&2\\ 0&1&2\\ 0&0&1 \end{array}} \right]\) is the translation matrix. Vector 2 in each direction of x and y
Hence B-IV is the correct pair \(\left[ {\begin{array}{*{20}{c}} {0.5}&{ - 0.866}&0\\ {0.866}&{0.5}&0\\ 0&0&1 \end{array}} \right]\)is an angle of 60 degrees rotation matrix.
Hence C-III is the correct pair \(\left[ {\begin{array}{*{20}{c}} 1&2&0\\ 0&1&0\\ 0&0&1 \end{array}} \right]\)is the shear matrix of quantity 2 with only x-shear.
Hence D-I is the correct pair
∴ Hence the correct answer is A-II, B - IV, C - III, D - I.