BABSc, B.Com & BCA Questions _III - Nalanda Open University

Nalanda Open University
Annual Exam-2010,
Bachelor of Science (Physics) Hons, Part-III
Paper-VII
Time: 3 Hrs Full Marks: 75
Answer any FIVE questions. All questions are of equal marks.
1. What do you mean by Scalar and Vector potentials? Show that they satisfy an
inhomogeneous wave equation under Lorentz condition.
2. Show that Maxwell's field equations are Covariant under Lorentz transformation.
3. Define a Plasma State. Enumerate the concept of temperature in Plasmas and the
Collective behaviours of Plasma.
4. Enumerate the various quantum numbers which are used to describe the motion of
an electron.
5. What is Zeeman effect? Distinguish between normal and anomalous Zeeman effect.
Discuss experimental arrangement for observing normal Zeeman effect.
6. Discuss vibrational spectra of a diatomic molecule as a harmonic vibrator.
7. Describe the principle of N.M.R. Spectroscopy. Enumerate continuous wave NMR
Spectrometer. Discuss the modality to record the Spectrum in this Spectrometer.
8. What do you mean by the word LASER? Enumerate the principle of Laser.
Describe Rubi Laser. Give the applications of laser.
9. Discuss size, mass, mass defect and binding energy of atomic nucleus. Describe
the variation of binding energy per nucleon with mass number and related
consequences.
10. Give an account of liquid drop model of nucleus.