JNTUK R07A1BS05 APPLIED PHYSICS 2011 Question Paper

Question Paper University : Jawaharlal Nehru Technlogical University , Kakinada.

Question Paper Course  :  B.Tech 1st year.

Question Paper Subject code : R07A1BS05.

Question Paper Subject  : APPLIED PHYSICS.

Question Paper Year of Exam  : June 2011.

Question Paper Attachment : Texts

Question Paper Set : 1 to 4.

Question Paper Version : Type Version.

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Code No: R07A1BS05 R07 Set No. 2

I B.Tech Examinations,May 2011

APPLIED PHYSICS

Common to BME, IT, ICE, E.COMP.E, ETM, E.CONT.E, EIE, CSE, ECE, CSSE, EEE

Time: 3 hours Max Marks: 80

Answer any FIVE Questions

All Questions carry equal marks

===============================================

1. (a) What is population inversion relating to laser action? Explain.

(b) Describe the various methods to achieve population inversion.

(c) Explain the important components of a laser system. [6+6+4]

2. (a) What are the sources of permanent dipole moment in magnetic materials?

(b) Explain the hysteresis loop observed in Ferro-magnetic materials.

(c) Write notes on Ferro-electricity. [6+6+4]

3. (a) Discuss the motion of an electron in a periodic lattice.

(b) What are Brillouin zones? How are they related to energy levels of an electron in a metal?

(c) Explain the concept of effective mass of electron. [8+4+4]

4. (a) Explain the formation of an ionic crystal, with a suitable example.

(b) Derive an expression for the cohesive energy of an ionic crystal. [6+10]

5. (a) Explain, in detail, the various properties of nanomaterials.

(b) Write applications of nanomaterials in ‘information technology’. [12+4]

6. (a) Explain the properties of matter waves.

(b) Describe GP Thomson’s experiment to verify the wave nature of matter. [6+10]

7. (a) Distinguish between intrinsic and extrinsic semiconductors with suitable examples.

(b) Derive an expression for the density of holes in valence band of an intrinsic semiconductor. [8+8]

8. (a) What are the differences between photography and holography?

(b) What is the basic principle of holography? Explain.

(c) Write the applications of holography. [4+6+6]

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Code No: R07A1BS05 R07 Set No. 4

I B.Tech Examinations,May 2011

APPLIED PHYSICS

Common to BME, IT, ICE, E.COMP.E, ETM, E.CONT.E, EIE, CSE, ECE, CSSE, EEE

Time: 3 hours Max Marks: 80

Answer any FIVE Questions

All Questions carry equal marks

===================================================

1. (a) What are the differences between photography and holography?

(b) What is the basic principle of holography? Explain.

(c) Write the applications of holography. [4+6+6]

2. (a) Distinguish between intrinsic and extrinsic semiconductors with suitable examples.

(b) Derive an expression for the density of holes in valence band of an intrinsic semiconductor. [8+8]

3. (a) Explain the formation of an ionic crystal, with a suitable example.

(b) Derive an expression for the cohesive energy of an ionic crystal. [6+10]

4. (a) Discuss the motion of an electron in a periodic lattice.

(b) What are Brillouin zones? How are they related to energy levels of an electron in a metal?

(c) Explain the concept of effective mass of electron. [8+4+4]

5. (a) What is population inversion relating to laser action? Explain.

(b) Describe the various methods to achieve population inversion.

(c) Explain the important components of a laser system. [6+6+4]

6. (a) Explain the properties of matter waves.

(b) Describe GP Thomson’s experiment to verify the wave nature of matter. [6+10]

7. (a) What are the sources of permanent dipole moment in magnetic materials?

(b) Explain the hysteresis loop observed in Ferro-magnetic materials.

(c) Write notes on Ferro-electricity. [6+6+4]

8. (a) Explain, in detail, the various properties of nanomaterials.

(b) Write applications of nanomaterials in ‘information technology’. [12+4]

********

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Code No: R07A1BS05 R07 Set No. 1

I B.Tech Examinations,May 2011

APPLIED PHYSICS

Common to BME, IT, ICE, E.COMP.E, ETM, E.CONT.E, EIE, CSE, ECE, CSSE, EEE

Time: 3 hours Max Marks: 80

Answer any FIVE Questions

All Questions carry equal marks

=======================================================

1. (a) What are the sources of permanent dipole moment in magnetic materials?

(b) Explain the hysteresis loop observed in Ferro-magnetic materials.

(c) Write notes on Ferro-electricity. [6+6+4]

2. (a) Discuss the motion of an electron in a periodic lattice.

(b) What are Brillouin zones? How are they related to energy levels of an electron in a metal?

(c) Explain the concept of effective mass of electron. [8+4+4]

3. (a) Explain the properties of matter waves.

(b) Describe GP Thomson’s experiment to verify the wave nature of matter. [6+10]

4. (a) Explain, in detail, the various properties of nanomaterials.

(b) Write applications of nanomaterials in ‘information technology’. [12+4]

5. (a) Distinguish between intrinsic and extrinsic semiconductors with suitable examples.

(b) Derive an expression for the density of holes in valence band of an intrinsic semiconductor. [8+8]

6. (a) What are the differences between photography and holography?

(b) What is the basic principle of holography? Explain.

(c) Write the applications of holography. [4+6+6]

7. (a) What is population inversion relating to laser action? Explain.

(b) Describe the various methods to achieve population inversion.

(c) Explain the important components of a laser system. [6+6+4]

8. (a) Explain the formation of an ionic crystal, with a suitable example.

(b) Derive an expression for the cohesive energy of an ionic crystal. [6+10]

********

=======================================================

Code No: R07A1BS05 R07 Set No. 3

I B.Tech Examinations,May 2011

APPLIED PHYSICS

Common to BME, IT, ICE, E.COMP.E, ETM, E.CONT.E, EIE, CSE, ECE, CSSE, EEE

Time: 3 hours Max Marks: 80

Answer any FIVE Questions

All Questions carry equal marks

=======================================================

1. (a) Explain the formation of an ionic crystal, with a suitable example.

(b) Derive an expression for the cohesive energy of an ionic crystal. [6+10]

2. (a) Discuss the motion of an electron in a periodic lattice.

(b) What are Brillouin zones? How are they related to energy levels of an electron in a metal?

(c) Explain the concept of effective mass of electron. [8+4+4]

3. (a) Explain, in detail, the various properties of nanomaterials.

(b) Write applications of nanomaterials in ‘information technology’. [12+4]

4. (a) What is population inversion relating to laser action? Explain.

(b) Describe the various methods to achieve population inversion.

(c) Explain the important components of a laser system. [6+6+4]

5. (a) What are the differences between photography and holography?

(b) What is the basic principle of holography? Explain.

(c) Write the applications of holography. [4+6+6]

6. (a) Distinguish between intrinsic and extrinsic semiconductors with suitable examples.

(b) Derive an expression for the density of holes in valence band of an intrinsic semiconductor. [8+8]

7. (a) What are the sources of permanent dipole moment in magnetic materials?

(b) Explain the hysteresis loop observed in Ferro-magnetic materials.

(c) Write notes on Ferro-electricity. [6+6+4]

8. (a) Explain the properties of matter waves.

(b) Describe GP Thomson’s experiment to verify the wave nature of matter. [6+10]

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