Engineering Physics S1S2 Btech MG University May 2014

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Previous question paper of S1 S2 Engineering Physics May 2014

B.TECH DEGREE EXAMINATION,MAY 2014

First and Second Semesters

EN 010 102- ENGINEERING PHYSICS

 (New Scheme-2010 Admission onwards)

[Regular/Improvement/Supplementary]

[Common for All Branches]

Time : Three Hours                                                                                    Maximum:100 Marks

 

Part A

Answer all questions.

Each Question Carries 3 marks

  1. Enlist the applications of lasers in medicine.
  2. What is meant by Silsbee effect?
  3. Define atomic packing factor. What is its unit?
  4. Classify shape memory alloys?
  5. Define piezo electric effect Draw a  diagram to show piezoelectric axes of quartz?

 

Part B

Answer all questions.

Each Question Carries 5 marks

  1. Explain the principle of laser and hence explain the importance of meta stable state
  2. What is meant by ac Josephon effect?Derive the expression for ac super current through a Josephon junction
  3. Prove the relationship between the edge of the unit cell and the atomic radius for the bcc and fcc lattices
  4. Give the details of Rayleigh scattering?
  5. Write a short note on liquid crystals and their applications

Part C

Answer all questions.

Each Question Carries 12 marks

1.Describe the working of a ruby laser. What are its merits, demerits and any two important applications (9+1+1+1 marks)

or

2. Explain (a) the principle of holography (b)method of hologram (c)Reconstruction of image from a hologram; (d)Why a laser beam only can be used for recording and reconstructing hologram? (1+5+4+3 marks)

3.(a) Explain the stability of nanoclusters in relation with magic number(6 marks)

(b) Discuss the electric and magnetic properties of nano materials (6 marks)

or

4. (a)Explain isotope effect and flux quantization

(b) Give a comparative treatment between type I and type II superconductors

5. Give the details of crystal systems and related Bravais lattices(12 marks)

or

6. Discuss the structural, electrical, magnetic and chemical properties of metallic glasses(12 marks)

7.Explain the principle, construction and working and merits and demerits of magnetostriction ultrasound generator

or

8.What is meant by Raman effect? Explain the details of experimental study of Raman effect

9.(a) Define acceptance angle and Numerical aperture

(b)Derive an expression for N.A

(c)What are the differences between Step Index multi mode fibres and GRIN fibres(3+5+4 marks)

or

10.Explain the working of any three optical fiber sensors with suitable block diagrams

 

 

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