|Time: 3 hours||Max. Marks: 80|
1a. Define coordination number and packing factor of a crystal.
b. Describe BCC crystal structure, with a suitable example.
c. Obtain an expression for the packing factor of FCC structure. (4 + 6 + 6)
2a. Derive 3-dimensional, time independent Schrodinger wave equation for an electron.
b. What is the physical significance of wave function?
c. Deduce the expression for energy of an electron confined to a potential box of width ‘x’. (6 + 4 + 6)
3a. Discuss with suitable mathematical expressions, the Kronig-Penney ...