Download BBA IInd SEMESTER EXAMINATION 2008-09

M.Sc. Physics II (Second) Semester Examination
2015-16
Course Code: MPH201
Paper ID: 0878177
Solid State Physics
Time: 3 Hours
Max. Marks: 70
Note: Attempt six questions in all. Q. No. 1 is compulsory.
1.
a)
b)
c)
d)
e)
f)
g)
h)
Answer any five of the following (limit your answer in 50
words).
(4x5=20)
Enumerate the characteristics of various crystal systems.
What is meant by crystal imperfections?
Distinguish between ionic and Vander Waals crystals.
Explain Bragg’s law for X-ray diffraction in crystals.
Explain the significance of Brillouin zones with particular
reference to any cubic lattice.
What is meant by hysteresis in magnetic materials?
Explain how Hall coefficient is used to determine the
mobility of charge carriers.
Explain ‘Meissner effect’.
2.
What is meant by paint defects in crystal lattice? What are the
different types of point defects? How are they used?
(10)
3.
Derive Bragg’s law of X-ray diffraction in crystals. Give an
account of powder method of crystal structure analysis. (10)
4.
Describe the Hall effect. Give an elementary theory of Hall
effect. Mention the important uses of Hall effect.
(10)
5.
How will you construct the Brillouin zone of FCC lattice and
BCC lattice?
(10)
6.
What are superconductors? Describe the principle of a
Superconductive Quantum Interference Device (SQID). List
out their uses and their engineering applications.
(10)
7.
Distinguish between ferromagnetic, ferrimagnetic and anti
ferromagnetic materials. Give an example for each class of
material. Discuss the various use of ferrites.
(10)
8.
What is the Einstein’s model for the phonon frequency
distribution? Use this model to calculate the internal energy
per k mol for a solid. Show that the specific heat varies
experimentally with (-1/T) in this model.
(10)