Kurukshetra University 2008 B.Tech Electronics and Communications Engineering Physics-1 - Question Paper
Wednesday, 03 July 2013 05:50Web
BT-l/D08
PHYSICS-I
Maximum Marks : 100
Time : 3 hours
Note: Attempt 5 ques. in all, selecting at lowest 1 questic from every unit.
UNIT-I
1. (a) explain the formation of Newton's rings by reflected light.Explain how these rings can be used to obtain th wavelength of light. [14]
(b) discuss the interference trend formation by Fresnel's bi-prism.
2. (a) Derive expression for the dispersive power and resolving power of a plane transmission diffraction grating. [10]
(b) define construction and working of Nicol prism. [10]
UNIT-II
3. (a) What do you understand by the terms Stimulated absorption. Spontaneous emission and Stimulated emission ?
(b) Draw a neat diagram of He-Ne laser and define the method of its working. [10]
4. (a) Derive an expression for acceptance angle and numerical aperture, in optical fibre.[10]
(b) What do you understand by Single mode ant Multimode fibre ? [5]
UNIT-III
5. (a) State and prove Gauss's legal regulations in electrostatic.How Gauss's legal regulations is applied to obtain the electric fit due to a infinite line charge ? [15]
(b) What do you understand by a Waveguide ? [5]
6.(a) Deduce an expression for energy stored in dielectric in electrostatic field. [10]
(b) describe Electric field intensity, Polarization vector, Electric displacement, and establish relation ranging from them. [10]
UNIT-IV
7. What was the objective of conducting the Michelson - Morley experiment ? define the experiment. How is the negative outcome of the experiment interpreted ? [20]
8. (a) define the principle, construction and working of Nuclear reactor. [10]
(b) Briefly discuss the principle, construction and working of Ionization chamber. [10]
Earning: Approval pending. |