University |
Anna University |

Download |
Question Bank |

Department |
B.E Computer Science |

Subject & Subject Code |
PH 6151 Engineering Physics |

Regulation |
2018 |

Year |
Apr/May 2019 |

Official Website |
https://library.annauniv.edu/index.php |

## Anna University Question Bank

Anna University B.E Computer Science PH 6151 Engineering Physics Question Bank

Download All Anna University BE Computer Science Engineering Question Bank Here

**Download Anna University Engineering Physics Question Bank**

PH 6151 Engineering Physics Regulation 2018 | Download Question Bank Here |

**Anna University Engineering Physics Question Bank**

**Part – A :(10 x 2 = 20 marks)**

1. List any four factors that affect elasticity of a material.

2. Define Simple Harmonic Motion.

3. What is noise? Give an example.

4. Why does a glass bottle break when you pour hot water in it?

5. Define Diffraction. Give an example.

6. For a semiconductor laser, the bandgap is 0.9 eV. What is the wavelength of light emitted from it?

7. What is Total Internal Reflection?

8. What is a debroglie wave?

9. State Bragg’s law.

10. What is epitaxy?

**Part-B : (8 x 8 = 64 marks)(Answer any 8 questions)**

11. State Hooks law of elasticity. Draw stress-strain diagram and discuss the behavior of aductile material under loading

12. Describe a method to find moment of inertia of a disc using torsion pendulum.

13. Explain how ultrasonic waves can be produced by piezo electric method.

14. What is acoustic grating? Explain how it can be used to measure the velocity of ultrasonic waves in liquids.

15. With neat diagram, derive an expression for thermal conductivity through a compound media connected in series.

16. Discuss using relevant diagrams about the static part in Forbe’s method

17. Explain the working of Airwedge with necessary diagram to find the thickness of a thin wire.

18. Explain the theory behind anti-reflection coating.

19. Write short notes on homo-junction and hetero-junction lasers

20. Derive the time independent Schrödinger wave equation.

21. Find the expression for acceptance angle of a fiber optic cable.

22. Sketch and explain the Fermi-Dirac statistical distribution with respect to energy at OK and above

**Part-C: (2 x 8 = 16 marks)**

23. Derive Einsteins coefficients and write their significance.

24. What is coordination number? Find the packing factor of a FCC lattice with neat diagrams.

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