STUPIDSID
1
Define drift velocity.
2 M
2
What are the sources of resistance in metals?
2 M
3
State the properties of a semiconductor.
2 M
4
What is meant by the law of mass action in semiconductor.
2 M
5
Give Curie-Weiss law and its importance.
2 M
6
What is meant by hysteresis loop and what do you infer form it?
2 M
7
What are dielectric materials? Give their properties.
2 M
8
Distinguish Lorentz force and Coulomb force in dielectrics.
2 M
9
What do you understand by the term queching?
2 M
10
List out the various forms of carbon nano tubes.
2 M
Answer the any one question from Q11 (a) & Q11 (b)
11 (a)
Derive expression for electrical and thermal conductivities on the basis of classical free electron theory and deduce the value of Lorentz number.
16 M
11 (b)
Derive an expression for density of states in a metal and hence obtain the Fermi energy in terms of density of free electrons.
16 M
Answer the any one question from Q12 (a) & Q12(b)
12 (a)
Derive expression for the carrier concentration in an intrinsic semiconductor.
16 M
12 (b)
What is Hall effect and give its origin? Describe an experiment for the measurement of the Hall coefficient and Hall Voltage.
16 M
Answer the any one question from Q13 (a) & Q13 (b)
13 (a) (i)
Discuss the domain structure in ferromagnetic materials. Show how hysteresis curve is explained on the basis of domain theory.
10 M
13 (a) (ii)
Differentiate soft and hard magnetic materials.
6 M
13 (b) (i)
Explain Meissner effect. How it is used to classify the Type-I and Type-II superconductors?
8 M
13 (b) (ii)
Write short notes on SQUID and magnetic levitation.
8 M
Answer the any one question from Q14 (a) & Q14 (b)
14 (a)
What is meant by local field in dielectric? Deduce Clausius-Mosotti equation.
16 M
14 (b)
What is dielectric breakdown? Write in detail about the various factors contributing to breakdown in dielectrics.
16 M
Answer the any one question from Q15 (a) & Q15 (b)
15 (a)
Give an account on Shape Memory Alloys (SMA) and their applications.
16 M
15 (b)
What is meant by CNT? Describe any three methods for producing nano-tubes.
16 M
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