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(Common to IT, ECE, EIE & ME)
Time: 3 hours Max. Marks: 70
(Compulsory Question)
*****
1 Answer the following: (10 X 02 = 20 Marks)
(b) What is diffraction?
(c) Define unit cell.
(d) Illustrate Miller indices.
(e) State de?Broglie hypothesis.
(g) What is Hall effect?
(h) What is hysteresis?
(i) State Josephson effect.
(j) What is quantum confinement?
PART ? B
(Answer all five units, 5 X 10 = 50 Marks)
UNIT ? I
2 Explain the Fraunhofer diffraction due single slit and double slit.
OR
3 Derive Einstein?s coefficients of absorption, spontaneous and stimulation emission. Also obtain the
relation between them.
UNIT ? II
4 Derive and tabulate the packing fractions of SC, BCC and FCC.
OR
UNIT ? III
6 Write the properties of matter waves. Derive Schrodinger time independent wave equation.
7 Explain the Kronig-Penny model.
UNIT ? IV
semiconductors.
OR
9 Classify and explain the magnetic materials and its properties.
10 Explain nano scale effects on optical and magnetic properties of a material.
OR
11 Classify and explain the bottom-up synthesis methods.
*****
R15
FirstRanker.com - FirstRanker's Choice
(Common to IT, ECE, EIE & ME)
Time: 3 hours Max. Marks: 70
--- Content provided by FirstRanker.com ---
PART ? A(Compulsory Question)
*****
1 Answer the following: (10 X 02 = 20 Marks)
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(a) What is the role of optical resonator?(b) What is diffraction?
(c) Define unit cell.
(d) Illustrate Miller indices.
(e) State de?Broglie hypothesis.
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(f) What is Fermi-Dirac distribution function?(g) What is Hall effect?
(h) What is hysteresis?
(i) State Josephson effect.
(j) What is quantum confinement?
--- Content provided by FirstRanker.com ---
PART ? B
(Answer all five units, 5 X 10 = 50 Marks)
UNIT ? I
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2 Explain the Fraunhofer diffraction due single slit and double slit.
OR
3 Derive Einstein?s coefficients of absorption, spontaneous and stimulation emission. Also obtain the
relation between them.
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UNIT ? II
4 Derive and tabulate the packing fractions of SC, BCC and FCC.
OR
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5 What are ultrasonics? Explain the productions of ultrasonics by piezoelectric method.UNIT ? III
6 Write the properties of matter waves. Derive Schrodinger time independent wave equation.
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OR7 Explain the Kronig-Penny model.
UNIT ? IV
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8 Explain the formation of P-N junction with neat diagram and explain the direct & indirect band gapsemiconductors.
OR
9 Classify and explain the magnetic materials and its properties.
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UNIT ? V10 Explain nano scale effects on optical and magnetic properties of a material.
OR
11 Classify and explain the bottom-up synthesis methods.
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*****
R15
FirstRanker.com - FirstRanker's Choice
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