PH3256 Physics for Information Science Previous Year Question Papers - Anna University

UNIT 1 – Dielectric Properties of Materials

Part A

• Define dielectric constant & electric susceptibility
• Types of polarization
• Define dielectric breakdown
• State Lorentz field equation

Part B

• Derive Lorentz internal field
• Explain polarization mechanisms
• Derive Clausius-Mossotti equation
• Explain dielectric loss & breakdown factors

UNIT 2 – Conducting Properties of Materials

Part A

• Drawbacks of classical free electron theory
• Define Fermi energy & Fermi level
• State Wiedemann-Franz law
• Define mean free path

Part B

• Derive electrical & thermal conductivity
• Explain Fermi-Dirac distribution
• Derive density of states & Fermi energy (0 K)
• Explain Wiedemann-Franz law & Lorentz number

UNIT 3 – Magnetic Properties of Materials

Part A

• Classification of magnetic materials
• Define hard & soft magnetic materials
• Define GMR effect
• Define magnetic domain

Part B

• Explain domain theory of ferromagnetism
• Explain hysteresis (B-H curve)
• Explain magnetic data storage & GMR sensors
• Compare dia, para, ferro magnetic materials

UNIT 4 – Optical Properties of Materials

Part A

• Direct vs indirect bandgap
• Principle of photodetector
• Define exciton
• Advantages of OLED

Part B

• Explain solar cell (construction & working)
• Explain LED & OLED
• Explain optical storage (CD, DVD, Blu-ray)
• Explain light-matter interaction

UNIT 5 – Nanodevices & Quantum Computing

Part A

• Define quantum confinement
• Define qubit
• Define Coulomb blockade
• Define quantum dot

Part B

• Explain quantum structures & density of states
• Explain single electron transistor (SET)
• Explain Bloch sphere & quantum computing basics
• Explain resonant tunneling diode (RTD)

Most Repeated / High-Weight Questions

Dielectric and polarization mechanisms, Fermi-Dirac distribution, magnetic material classification, semiconductor optical properties, solar cells and LEDs, quantum structures and quantum computing.