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Type of Announcement : Model Question Paper for Physics - II
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Model Question Paper for Physics II
1. What are defects in solids? Derive an expression for the concentration Schoottky defect at equilibrium temperature.
2. Explain with the necessary theory the powder method for X ray diffraction.
3. Draw the following planes
i) (111) ii) (123) iii) (110) iv) (100)
4. Write notes on the following
a) Braggs Law b) coordination number c) Packing fraction d) bonding in solids
5. Prove that
a) phase velocity of the associated wave is greater than the velocity of light
b) For a non relativistic free particle; the phase velocity is 50% of the group velocity.
6. How was Planck’s constant discovered? Derive the Plank’s radiation law
7. Giving the physical significance of wave function derive the time independent and time dependent Schrodinger wave equation.
8. Give the application of Schrodinger wave equation in Particle in box problem. Also calculate the first three Eigen values.
9. What are the classical assumptions of free electron theory? Derive Drude Theory to calculate the electrical conductivity.
10. Discuss the quantum free electron theory and show how it is able to remove various difficulties.
11. What is F. D. Distribution function? Obtain Richardson equation for thermionic emission.
12. What is Fermi energy? Calculate the value for free electron gas at 0K.and mention its significance.
13. How do you define Fermi energy and Fermi level? Derive an expression for Fermi energy. Show that the average energy of the electron at 0K is 3/5th of the Fermi energy.
14. Write short notes on
a) Density of states b) quantum statistics c) Nano structure d) Quantum size effect
15. What is the effect of periodic potential on the energy of electrons in a metal? On the basis of K. P model explain the formation of energy bands. Also give important conclusions.

See more Question download here : http://www.gateway.edu.in/giet/new/c...Physics_II.pdf