Ph.D. Course Work Examination June July 2017
PHYSICS (Paper II)
Recent Trends in Physics
Day Date: Wednesday, 28-06-2017 Max. Marks: 100
Time: 11.00 AM to 02.00 PM
Instructions: All questions are compulsory.
Q.1 Method of determination of lattice parameters for cubic, tetragonal,
hexagonal crystal systems.
10
Write a short note on any two: 10
Concept of calculation of texture analysis.
Data processing and refinement.
Powder diffraction method.
Q.2 Principle of FESEM and advantages over SEM and TEM
microscopy.
10
Write a short note on any two: 10
Concept of electron diffraction
Applications of FE-SEM microscopy
Principle of image formation
Q.3 Defined Quantum Harmonic Oscillator? Explain diatomic molecule
as Quantum Harmonic Oscillator.
10
Write a short note on any two: 10
Infrared Absorption spectroscopy
Application of IR to organic molecules
Advantages of FTIR instrumentation.
Q.4 Determination of optical bandgap using absorption spectroscopy. 10
Write a short note on any two: 10
Concept of absorption of light
Types of transitions
Effect of conjugation
Q.5 Explain the contact mode and tapping mode using atomic force
microcopy.
10
Write a short note on any two: 10
Magnetic force microscope
Electrostatic force microscope
Depth profiling using XPS