PART ? A (25 Marks)
1. What do you understand by division of wave front and division of amplitude?
(
3
--- Content provided by FirstRanker.com ---
)2. Determine the specific rotation of the sugar solution if the plane of polarization is
turned through 15
?
. The length of the tube containing 20% of sugar is 20 cm. (2)
--- Content provided by FirstRanker.com ---
3. Obtain Rayleigh Jeans law and Wien's law from Planck's law.(
3
)
4. Explain the significance of wave function in wave mechanics. (2)
--- Content provided by FirstRanker.com ---
5. Calculate the packing fraction of BCC and FCC lattices.(
3
)
6. Distinguish between intrinsic and extrinsic semi conductors.
--- Content provided by FirstRanker.com ---
(3
)
7. Distinguish between Ferrimagnetism and Anti Ferromagnetism. (2)
8. What are the applications of superconductors in Engineering?
--- Content provided by FirstRanker.com ---
(3
)
9. Explain the characteristics of carbon nanotubes. (2)
10. Match the following: (2)
--- Content provided by FirstRanker.com ---
(i) Ball Milling (a) Kronig-Penney model(ii) BCS theory (b) Maxwell-Boltzmann statistics
(iii) Electron gas (c) Fermi-Dirac statistics
(iv) Band theory (d) Superconductivity
(e) Nano materials
--- Content provided by FirstRanker.com ---
1. i(a), ii(d), iii(c), iv(e) 2.i(a), ii(b), iii(c), iv (d)3. i(b), ii(a), iii(c), iv(e) 4. i(e), ii(d), iii(c), iv (a)
PART ? B (5x10=50 Marks)
11.(a) Describe the necessary theory of interference in thin films by reflected light.
(
--- Content provided by FirstRanker.com ---
5)
(b) Explain the experiment to determine the wavelength of a monochromatic light
using diffraction grating.
(
--- Content provided by FirstRanker.com ---
5)
12.(a) Describe the working of a He-Ne laser with suitable energy level diagram.
(
5
--- Content provided by FirstRanker.com ---
)(b) Explain the propagation of a signal in step index and graded index fibers.
(
5
)
--- Content provided by FirstRanker.com ---
13.(a) Derive Bose-Einstein distribution law and explain the limitations.(
5
)
(b) Explain the classification of ensembles in statistical mechanics.
--- Content provided by FirstRanker.com ---
(5)14.(a) Derive the expression for the concentration of Schottky defects in ionic
crystals.
(
5
--- Content provided by FirstRanker.com ---
)(b) Describe the construction and working of LED.
(
5
)
--- Content provided by FirstRanker.com ---
15.(a) Describe the technique to determine the dielectric constant of a given dielectricmaterial.
(
5
)
--- Content provided by FirstRanker.com ---
(b) Using domain theory of magnetism, explain various stages in the study ofHysteresis curve.
(
5
)
--- Content provided by FirstRanker.com ---
16.(a) Explain in detail the preparation of a nano material using sol ? gel method.(
5
)
(b) Describe the working of a thin film solar cell.
--- Content provided by FirstRanker.com ---
(5
)
17. Write short notes on any two of the following: (10)
(a) X-ray florescence
--- Content provided by FirstRanker.com ---
(b) Free electron theory(c) High T
c
super conductors
FirstRanker.com - FirstRanker's Choice
--- Content provided by FirstRanker.com ---