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**Anna University Question Paper Code : 57034**

**B.E./B.Tech: DEGREE EXAMINATION, MAY/JUNE 2014.**

**First Semester**

**Civil Engineering**

**PH 6151 ENGINEERING PHYSICS I**

**(Common to all branches)**

**(Regulation 2013)**

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**ANNA UNIVERSITY SYLLABUS: CLICK HERE**

**PART A (10 x 2 = 20 marks)**

1. A crystal.plane cuts at 3a, 4b and 2c distances along the cryStallogrgphic.axes. Find the Miller indices of the plane.

2. Define atomic packing fraction.

3. What is Poisson's ratio?

4. State Newton's law of cooling.

5. What is meant by degenerate state?,

6. What is Compton wavelength? Give its-value.

7. List four methods of detecting.ultrasonic waves.

8. Calculate the intensity level of a turbine whose sound intensity is -100 Wm-2' when it is in.operation. GiVen that the standard intensity level is..10-12 Wm-2.

9. Define numerical aperture.

10. What are the roles played by the N2 and He in 002 Laser?

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