Anna University Engineering Updates
B.E./B.TECH. DEGREE EXAMINATION, JANUARY 2012
PH2111 - ENGINEERING PHYSICS - 1
First Semester
( Regulation - 2008 )
( Commom To All Branches )
Maximum : 100 Marks
Time : 3 Hours
Answer All Questions :-
Part - A ( 10 X 20 = 20 Marks )
1. What are direct and inverse peizo electric effect ?
2. Give the principle used in measurement of velocity of blood flow ?
3. What is meant by population Inversion ?
4. Name the properties of laser, which are making it suitable for Industrial applications ?
5. A fibre cable has an acceptance angle of 30* and a core index of refraction of 1.4. Calculate refractive index of the cladding ?
6. What are the main requirements of light sources used in fibre optic communication ?
7. What is Rayleigh - Jean's law of radiation ?
8. For a free particle moving winthin a one dimensional potential box, the ground state energy cannot be zero . Why ?
9. A unit cell has the dimensions a = b = c =4.74 A* a = B = y =60* . What is it crystal structure ?
10. Defects in crystals are not always harmful. Justify ?
Part - B ( 5 X 16 = 80 Marks )
11. (a) (i) Explain the functions of SONAR. (4)
(ii) What is an Acoustic grating ? (3)
(iii) How is it used in determining the velocity of ultra sound ? (9)
(or)
(b) Elaborate on the three different ultrosonic NDT scans and their displays which are in common practice. (16)
12. (a) (i) Distinguish Between Spontaneous and Stimulated Emissions of radiation ? (4)
(ii) Why is population inversion is necessary for laser action ? (4)
(iii) What are different puming mechanism used in lasers. Give an example for each ? (8)
(or)
(b) (i) Discuss the construction and working of Nd : YAG laser ? (8)
(ii) What are its Advantages ?(3)
(iii) Explain any two industrial applications of laser ? (5)
13. (a) (i) Explain total internal reflection with suitable diadgrams. Define acceptance angle and numerical aperture. Derive expressions for them (2+4+4)
(ii) How are optical fibers classified based on modes and refrective index profile. How are signals transmitted through them. (6)
(or)
(b) (i) What is meant by attuneation ? Discuss the different mechanisms which are responsible for attuneation in the optical fibre. (2+8)
(ii) Explain the working of a displacement sensor in details. (6)
14. (a) Using Quantum theory derive an expression for the average energy emitted by a black body and arrive at planck's radiation law in terms of frequency. State the assumpstions before starting the derivation. (16)
(or)
(b) What is the principle of transmission electron microscope ? Draw the construction of electron microscope and explain its working ? Give its advantages, disadvantags and applications. (2+8+6)
15. (a) (i) Distinguish between primitiv cell and unit cell. Describe the Diamond Structure what type of bond is present in diamond ? (2+8+2)
(ii) Iron has BBC structure with atomic radius O. 123 A*. Find the lattivce constant of the unit cell. (4)
(or)
(b) What are the point and line imperfections in solid materials ? Illustrate this imperfections with suitable sketches (16).
Mathematics - 1 (MA2111) Question papers => Click Here
Eng. Chem - 1 (CY2111) Question Papers => Click Here
To know The First Sem Time Table => Click Here
B.E./B.TECH. DEGREE EXAMINATION, JANUARY 2012
PH2111 - ENGINEERING PHYSICS - 1
First Semester
( Regulation - 2008 )
( Commom To All Branches )
Maximum : 100 Marks
Time : 3 Hours
Answer All Questions :-
Part - A ( 10 X 20 = 20 Marks )
1. What are direct and inverse peizo electric effect ?
2. Give the principle used in measurement of velocity of blood flow ?
3. What is meant by population Inversion ?
4. Name the properties of laser, which are making it suitable for Industrial applications ?
5. A fibre cable has an acceptance angle of 30* and a core index of refraction of 1.4. Calculate refractive index of the cladding ?
6. What are the main requirements of light sources used in fibre optic communication ?
7. What is Rayleigh - Jean's law of radiation ?
8. For a free particle moving winthin a one dimensional potential box, the ground state energy cannot be zero . Why ?
9. A unit cell has the dimensions a = b = c =4.74 A* a = B = y =60* . What is it crystal structure ?
10. Defects in crystals are not always harmful. Justify ?
Part - B ( 5 X 16 = 80 Marks )
11. (a) (i) Explain the functions of SONAR. (4)
(ii) What is an Acoustic grating ? (3)
(iii) How is it used in determining the velocity of ultra sound ? (9)
(or)
(b) Elaborate on the three different ultrosonic NDT scans and their displays which are in common practice. (16)
12. (a) (i) Distinguish Between Spontaneous and Stimulated Emissions of radiation ? (4)
(ii) Why is population inversion is necessary for laser action ? (4)
(iii) What are different puming mechanism used in lasers. Give an example for each ? (8)
(or)
(b) (i) Discuss the construction and working of Nd : YAG laser ? (8)
(ii) What are its Advantages ?(3)
(iii) Explain any two industrial applications of laser ? (5)
13. (a) (i) Explain total internal reflection with suitable diadgrams. Define acceptance angle and numerical aperture. Derive expressions for them (2+4+4)
(ii) How are optical fibers classified based on modes and refrective index profile. How are signals transmitted through them. (6)
(or)
(b) (i) What is meant by attuneation ? Discuss the different mechanisms which are responsible for attuneation in the optical fibre. (2+8)
(ii) Explain the working of a displacement sensor in details. (6)
14. (a) Using Quantum theory derive an expression for the average energy emitted by a black body and arrive at planck's radiation law in terms of frequency. State the assumpstions before starting the derivation. (16)
(or)
(b) What is the principle of transmission electron microscope ? Draw the construction of electron microscope and explain its working ? Give its advantages, disadvantags and applications. (2+8+6)
15. (a) (i) Distinguish between primitiv cell and unit cell. Describe the Diamond Structure what type of bond is present in diamond ? (2+8+2)
(ii) Iron has BBC structure with atomic radius O. 123 A*. Find the lattivce constant of the unit cell. (4)
(or)
(b) What are the point and line imperfections in solid materials ? Illustrate this imperfections with suitable sketches (16).
Mathematics - 1 (MA2111) Question papers => Click Here
Eng. Chem - 1 (CY2111) Question Papers => Click Here
To know The First Sem Time Table => Click Here
