DISTANCE EDUCATION
M.Sc.( Physics) DEGREE EXAMINATION, DECEMBER 2017.
ELECTROMAGNETIC THEORY
(2008 onwards)
Time 3 hours Maximum 100 marks
Answer any FIVE questions.
Each question carries 20 marks.
x 20 100)
1. Deduce the Maxwell' equations in integral form.
Discuss polarization of electromagnetic waves.
State and explain Poynting vector.
2. Discuss reflection of electromagnetic wave at the
interface of non- conducting media.
Obtain the Fresnel equations for incident wave
polarized with its E vector parallel to the plane of
incidence.
What is total internal reflection? Explain
3. Discuss reflection and transmission coefficients at
an interface between two non-conducting media.
Obtain the boundary conditions at the surface of
discontinuity.
State and explain Brewster's law.
Sub. Code
14
DE-2954
ws1
2
4. Obtain the Clasusius Mossotti relation.
Explain dispersion in solids and liquids.
Obtain Lorentz formula.
5. Write a detailed note on theory of scattering of
electromagnetic waves.
What are scattering parameter? Explain.
Briefly explain coherence and incoherence of
scattering light.
6. What is a TE mode? Explain the theory of resonant
cavities in TE modes?
What are waveguides? Explain the attenuation in
it?
Briefly explain the generation of electromagnetic
waves.
7. Describe modes of propagation in rectangular and
cylindrical wave guides.
Explain the operation of Klystron.
What are Gunn diodes? Explain its operation.
8. Write a note on plasma oscillations and
magnetohydrodynamics.
Discuss the conditions for plasma existence.
What are Plasma waves? Explain.
————————