v) Show that the group velocity is zero at edge of the first Briclouin zone for a linear
monoatomic chain.
vi) What should be the nature of the wave function used to represent an electron in a
crystalline solid?
vii) Explain with the help of a diagram what is a depletion region in a p-n junction?
viii) Write the conditions governing the geometric structure factor of the bcc lattice
and list two missing planes.
ix) Explain why the nucleation process becomes more stable as the size of the
nucleus increases.
x) Distinguish between ferroelectric and pyroelectric materials and give one example
of each.
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Expert's answer
2019-01-07T08:38:26-0500
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