Download PTU MCA 2020 March 5th Sem 90002 Computer Graphics Question Paper

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Roll No. Total No. of Pages : 02

Total No. of Questions : 09

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MCA (Sem.=5)

COMPUTER GRAPHICS

Subject Code : MCA-501

M.Code : 90002

Time : 3 Hrs. Max. Marks : 60

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INSTRUCTIONS TO CANDIDATES :

1. SECTIONS-A, B, C & D contains TWO questions each carrying TEN marks and students has to attempt any ONE question from each SECTION.
2. SECTION-E is COMPULSORY consisting of TEN questions carrying TWENTY marks in all.

SECTION-A

1. Explain various input devices.

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2. Explain working of a CRT with the help of diagram.

SECTION-B

1. Describe the matrix formulation of 2-D transformations; translation, rotation and scaling.
2. What are viewing transformations? Explain the steps involved in it.

SECTION-C

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1. Derive the matrix form for perspective projection transformation using 3-demensional homogenous representation: With a neat sketch, describe various parameters involved in the matrix representation.
2. Derive the matrix form for the geometric transformations in 3-D graphics for the following operations.
   1. Translation
   2. Scaling
   3. Reflection

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SECTION-D

1. What are the steps involved in two-pass Z-Buffer shadow algorithm? Explain.
2. Explain and compare Gouraud and Phong surface shading methods.

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SECTION-E

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1. Short answer type questions :
   1. What is pixel?
   2. Explain Random Scan System?
   3. What are homogeneous coordinates?
   4. What is shear transformation?
   5. Write a short note on working of Raster Scan Display systems?

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   6. Discuss vanishing points?
   7. Write about windows and view port?
   8. What is text clipping? Discuss.
   9. Discuss Ellipse generating algorithms?
   10. What is halftoning?

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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.