1(a)
Explain in brief Compton effect on the basis of quantum pothesis .What is its physical significance?

6 M

1(b)
Explain the terms Probability density, Normaliza
tion. Mention any two characteristics of wave function.

6 M

1(c)
Obtain relationship between Group velocity and p
hase velocity.

4 M

1(d)
What is De Broglie wavelength of a proton whose
energy is 3eV given mass of proton = \[ 1.67 \times 10^{-27}
kg\]

4 M

2(a)
Set up the one dimensional time independent schrodinger wave equation

7 M

2(b)
State De Broglie hypothesis. Show that the De Brogl
ie wavelength of an electron is found to be equal to \[\dfrac{12.26}{\sqrt{V}}A^{\circ}\]

6 M

2(c)
State and explain Heisenberg's Uncertainty principle.

3 M

2(d)
The position and momentum of 1keV electron are simultaneously determined. If its position is located within \[1A^{\circ}\], find the uncertainty in the
determination of its momentum.

4 M

3(a)
Define the terms 1) Drift velocity 2) Mean free path 3) Relaxation time 4) Resistance

4 M

3(b)
Discuss in brief the failures of CFET.

6 M

3(c)
What are charge carriers in semiconductors. Stat
e law of mass action. From this law obtain expression for Fermi level in an intrinsic semiconductor.

6 M

3(d)
Write a note on high temperature superconductors.

4 M

4(a)
What is hall effect? Obtain expression for Ha
ll voltage in terms of Hall coefficient.

7 M

4(b)
What are the types of super conductors. Explain.

6 M

4(c)
The Hall coefficient of \[-3.68 \times 10^{-5}m^{3}/C \] What is type of charge carriers? Also calculate the carrier concentration.

3 M

4(d)
Explain in brief the construction and working of
maglev.

4 M

5(a)
Explain the construction and working of CO

_{2}laser.
7 M

5(b)
Obtain expression for energy density in terms of Einstein's A & B co efficient.

3 M

5(c)
Discuss point to point communication using an optical fiber with the help of block diagram.

5 M

5(d)
Calculate numerical aperture, acceptance angle a
nd critical angle of a fiber having a core RI 1.50 and cladding RI 1.45.

4 M

6(a)
What is attenuation? Obtain expression for at tenuation co-efficient in an D37optical fiber of length L.

6 M

6(b)
Explain the construction and reconstruction of H
ologram.

6 M

6(c)
Obtain expression for propagation of light throu
gh an optical fiber.

5 M

6(d)
Define the terms 1) Acceptance angle. 2) Populat
ion inversion 3) Simulated emission.

3 M

7(a)
Discuss the seven crystal systems in terms of
Lattice parametric consideration and type of bravais lattice.

7 M

7(b)
Calculate the atomic packing fraction of BCC and
FCC.

6 M

7(c)
Obtain Miller Indices of a crystal plane with in
tercepts.

\[x=\dfrac{1}{3a},\ y=1b\] and \[z=\dfrac{1}{2}c\]

\[x=\dfrac{1}{3a},\ y=1b\] and \[z=\dfrac{1}{2}c\]

3 M

7(d)
Discuss the crystal structure of diamond.

4 M

8(a)
Explain the Bragg's X ray diffractometer. How
is crystal structure identified.

7 M

8(b)
Explain in brief Principle and working of LCD, mention three uses.

8 M

8(c)
Obtain expression for inter planar spacing in terms of Miller Indices.

5 M

9(a)
What is Mach number. Distinguish between ultrasonic and acoustic waves.

4 M

9(b)
Describe the operation and characteristic of Reddy Shock tube.

6 M

9(c)
What is CNT? Mention two properties. How is it synthesized using pyrolysis method.

7 M

9(d)
Mention the principle and 2 applications of SEM.

3 M

10(a)
Derive the Normal shock relationship using Rankine-Hugonit equation.

6 M

10(b)
Discuss the ball Milling and Sol Gel Methods of
Synthesis of Nano Materials. Mention advantages of each method.

10 M

10(c)
What is a shock wave? Mention three applications.

4 M

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