AKTU Computer Graphics · Important Questions 2026Source: ryzenstudy.com PYQs
BCS053 Computer Graphics Important Questions 2026 (AKTU)
Repeat analysis + most-asked questions, unit-wise
What we did: built from all 4 AKTU Computer Graphics papers (2021-22–2024-25): 98 questions grouped into 62 distinct questions, 23 of which were asked in more than one paper.
- of marks were repeat questions
- 46%
- of marks were repeat questions
- questions asked in 2+ papers
- 23
- questions asked in 2+ papers
- papers analysed (2021-22–2024-25)
- 4
- papers analysed (2021-22–2024-25)
- units, mapped to current syllabus
- 5
- units, mapped to current syllabus
How much of the paper repeats?
- Repeats are real: when we checked each newer BCS053 paper against the papers before it, on average 46% of its marks were questions already asked in an earlier paper.
- 2023-24 paper: 38% of marks were repeats (5 of 9 repeated questions were in our top list).
- 2024-25 paper: 54% of marks were repeats (7 of 11 repeated questions were in our top list).
- Topic weightage is a guide, not a guarantee: our Tier 1 + Tier 2 topics covered 54% of the next paper's marks — picking the same number of topics at random would have covered about 54%.
Across 10 subjects and 23 papers we tested, 43% of marks repeated earlier questions on average.
1.Unit-wise most-asked questions
Ranked by how many papers asked them, then by how recently. Click a paper to open it.
Unit 1: Introduction and Line Generation · Transformations
35% of past marks| Question | Asked |
|---|---|
| Find the transformed coordinates of a triangle having vertices A(4,1), B(7,1) and C(7,3) subjected to reflection through the line 2y = x. | Asked 3× |
| Explain Bresenham's circle algorithm and plot a pixel position for a circle whose center is (-3,8) and radius 12 units using midpoint circle algorithm. | Asked 2× |
| What considerations must be taken into account to ensure consistency and accuracy when implementing parallel algorithms for graphics? | Asked 2× |
| What is the role of homogeneous coordinates in computer graphics? | Asked 2× |
Unit 2: Windowing and Clipping
15% of past marks| Question | Asked |
|---|---|
| What are the advantages and limitations of the Cohen-Sutherland line clipping algorithm? | Asked 3× |
| Elaborate on curve clipping techniques in computer graphics. Discuss the challenges and methods involved in clipping curves, highlighting the key algorithms used. | Asked 2× |
| What do you mean by windowing and clipping? 2 marks2024-25 Q1(d) | Asked 1× |
| What are the challenges and solutions when clipping lines against non-rectangular clip windows? 2.3333333333333335 marks2024-25 Q2(b) | Asked 1× |
Unit 3: Three Dimensional
18% of past marks| Question | Asked |
|---|---|
| What are 3-D geometric primitives, and how do they form the building blocks of 3D models? | Asked 3× |
| Compare and contrast orthographic and perspective projections in 3-D viewing. | Asked 3× |
| What is a projection in the context of 3-D viewing? | Asked 2× |
| Explain 3-dimensional clipping. What are the problems that are encountered in perspective projections? | Asked 2× |
Unit 4: Curves and Surfaces
15% of past marks| Question | Asked |
|---|---|
| What are the parametric representations of quadric surfaces? Define mathematically in computer graphics. | Asked 3× |
| What are the properties associated with curves? Explain the mathematical representation for B-spline curves. | Asked 2× |
| What do you understand by Blobby Objects? | Asked 2× |
| What is the role of Bezier curves in designing curves and surfaces? Discuss its properties. | Asked 2× |
Unit 5: Hidden Lines and Surfaces
18% of past marks| Question | Asked |
|---|---|
| What is the principle behind the Back Face Detection algorithm? Explain in brief. | Asked 3× |
| What are the advantages of the z-buffer algorithm? | Asked 3× |
| Elaborate on the components and calculations involved in the Phong illumination model. How does it contribute to realistic rendering? | Asked 3× |
| What is the significance of specular reflection in rendering? | Asked 2× |
2.Topic weightage: which topics carry the marks
Blue = Tier 1 + Tier 2 (topics that carried ~80% of past marks). Grey = the rest. It shows where marks have gone, not a promise of what comes next.
Points and line drawing · U1
10% (cum 10%)
3-D clipping · U3
5.8% (cum 16%)
3-D viewing and projections · U3
5.6% (cum 21%)
Reflection and shearing · U1
5.6% (cum 27%)
Cohen-Sutherland line clipping · U2
5.6% (cum 33%)
Phong model and shading · U5
5.5% (cum 38%)
Display devices and CRT · U1
5.3% (cum 43%)
Splines · U4
5% (cum 48%)
Basic and composite transformations · U1
4.3% (cum 53%)
Back face detection · U5
4% (cum 57%)
Depth buffer method · U5
3.7% (cum 60%)
Frame buffer and video controller · U1
3.6% (cum 64%)
A-buffer, scan line and coherence · U5
3.2% (cum 67%)
3-D transformations · U3
3.2% (cum 70%)
3-D primitives and representation · U3
3.1% (cum 74%)
Types and applications of graphics · U1
3.1% (cum 77%)
Bezier curves · U4
3.1% (cum 80%)
Circle generation · U1
2.9% (cum 83%)
B-spline curves · U4
2.8% (cum 85%)
Liang-Barsky line clipping · U2
2.7% (cum 88%)
Quadric surfaces · U4
2.4% (cum 91%)
Curve and text clipping · U2
2.2% (cum 93%)
Viewing pipeline and windowing · U2
2.1% (cum 95%)
Polygon clipping · U2
1.8% (cum 97%)
Reflection components · U5
1.6% (cum 98%)
Blobby objects · U4
1.3% (cum 99%)
Non-rectangular clip windows · U2
0.6% (cum 100%)
| Topic | Papers | Share |
|---|---|---|
| Points and line drawing · Unit 1 · Tier 1 | 4/4 | 10% |
| 3-D clipping · Unit 3 · Tier 1 | 3/4 | 5.8% |
| 3-D viewing and projections · Unit 3 · Tier 1 | 4/4 | 5.6% |
| Reflection and shearing · Unit 1 · Tier 1 | 3/4 | 5.6% |
| Cohen-Sutherland line clipping · Unit 2 · Tier 1 | 3/4 | 5.6% |
| Phong model and shading · Unit 5 · Tier 1 | 3/4 | 5.5% |
| Display devices and CRT · Unit 1 · Tier 1 | 3/4 | 5.3% |
| Splines · Unit 4 · Tier 1 | 3/4 | 5% |
| Basic and composite transformations · Unit 1 · Tier 1 | 4/4 | 4.3% |
| Back face detection · Unit 5 · Tier 2 | 3/4 | 4% |
| Depth buffer method · Unit 5 · Tier 2 | 3/4 | 3.7% |
| Frame buffer and video controller · Unit 1 · Tier 2 | 3/4 | 3.6% |
| A-buffer, scan line and coherence · Unit 5 · Tier 2 | 3/4 | 3.2% |
| 3-D transformations · Unit 3 · Tier 2 | 2/4 | 3.2% |
| 3-D primitives and representation · Unit 3 · Tier 2 | 3/4 | 3.1% |
| Types and applications of graphics · Unit 1 · Tier 2 | 4/4 | 3.1% |
| Bezier curves · Unit 4 · Tier 2 | 2/4 | 3.1% |
| Circle generation · Unit 1 · Tier 2 | 2/4 | 2.9% |
| B-spline curves · Unit 4 · Tier 3 | 2/4 | 2.8% |
| Liang-Barsky line clipping · Unit 2 · Tier 3 | 2/4 | 2.7% |
| Quadric surfaces · Unit 4 · Tier 3 | 3/4 | 2.4% |
| Curve and text clipping · Unit 2 · Tier 3 | 2/4 | 2.2% |
| Viewing pipeline and windowing · Unit 2 · Tier 3 | 2/4 | 2.1% |
| Polygon clipping · Unit 2 · Tier 3 | 2/4 | 1.8% |
| Reflection components · Unit 5 · Tier 3 | 3/4 | 1.6% |
| Blobby objects · Unit 4 · Tier 3 | 2/4 | 1.3% |
| Non-rectangular clip windows · Unit 2 · Tier 3 | 1/4 | 0.6% |
3.Paper pattern (2024-25)
| Section | Questions | Rule |
|---|---|---|
| A | 7 × 2 marks | Attempt all |
| B | 5 × 2.3333333333333335 marks | Attempt any 3 |
| C | 11 × 7 marks | Attempt any 1 |
4.Study order
- 1Points and line drawing (Unit 1, Tier 1)
- 23-D clipping (Unit 3, Tier 1)
- 33-D viewing and projections (Unit 3, Tier 1)
- 4Reflection and shearing (Unit 1, Tier 1)
- 5Cohen-Sutherland line clipping (Unit 2, Tier 1)
- 6Phong model and shading (Unit 5, Tier 1)
- 7Display devices and CRT (Unit 1, Tier 1)
- 8Splines (Unit 4, Tier 1)
- 9Basic and composite transformations (Unit 1, Tier 1)
- 10Back face detection (Unit 5, Tier 2)
- 11Depth buffer method (Unit 5, Tier 2)
- 12Frame buffer and video controller (Unit 1, Tier 2)
- 13A-buffer, scan line and coherence (Unit 5, Tier 2)
- 143-D transformations (Unit 3, Tier 2)
- 153-D primitives and representation (Unit 3, Tier 2)
- 16Types and applications of graphics (Unit 1, Tier 2)
- 17Bezier curves (Unit 4, Tier 2)
- 18Circle generation (Unit 1, Tier 2)
FAQ
Which units of BCS053 carry the most marks?
Unit 1 (Introduction and Line Generation · Transformations, 35% of past marks) and Unit 5 (Hidden Lines and Surfaces, 18% of past marks).
Do AKTU Computer Graphics questions repeat?
Yes. On average 46% of the marks in each newer BCS053 paper came from questions already asked in an earlier paper, and 23 questions have appeared in more than one paper.
How is this list made?
Every question from the 4 papers (2021-22–2024-25) was mapped to the current AKTU syllabus and grouped with the same question from other years. Questions are ranked by how many papers they appeared in, then by how recently.
Study this subject
Note: this is based on past AKTU papers, not a guarantee. Questions are mapped to the current syllabus; topics that are no longer in the syllabus are left out.