PHYSICS subsidiary part II
PHYSICS
(General / Subsidiary Course)
Part -II
Time: 3 Hours ]
[Full Marks: 100
Pass Marks: 75
9 questions to be set, 5 to be answered.Group A consisting of Objective questions will be compulsory Groups B and C will contain 4 questions each and two questions will have to be answered from each of them.
Group-A: (Objective Questions)
Group-B: (Electrostatics and Magnetism)
Boundary conditions at the surface of separation of two dielectrics. Electric doubles, Dipole moment, Dielectric polarisation. Electrical image-problems involving Infinite conducting plane and thin conducting spherical shell only.
Magnetic shell, Langevin's and Weiss' theory to diapara and
ferromagnetic, Curie's law, Production and measurement of strong magnetic field, Magnetic circuit and Electromagnetic.
Curřent Electricity and Modern Physics:
Thermodynamic treatment of Seeback, Peltier and Thomson effects and their applications. Moving coil aperiodic and ballistic galbanometers, Growth and decay of currents in electric. circuits, Oscillatory discharge of a condenser.
A.C. and A.C. circuits : Use of vectors and complex quantities in. A.C. circuits theory (L.R.C.R. and I.C.R. circuits), Desauty's bridge, Auderson's bridge and Carey Foster's bridge
Measurement fo electronic charge by Millkan's method and specific charge of an electron by Thomson's method. Natural radioactivity. Rutherford & Soddy's theory of radioactive decay Geiger-Muller counter Discovery of
neutrons. isotopes. Artificial radio-activity Elementary ideas about nucleus and its structure. Nuclear fission. Reactors, Aaron's mass spectrograph
Photoelectric emission, Einsten's photoelectric equation,Photo-electirc,
photo-conductive and photo voltaic cells.
Compton effect Bragg's law and determination of x-ray wavelength
Cathode ray Oscilloscope and its uses in amplitude, frequency and
phase measurements. Solid state rectifier One stage R. C. Amplifier
Principles of amplitude modulation and demodulation Radio receiver through Block diagram.
GROUP-C (Optics)
Fermat's principle, Newtons ring. Micheloson's interferometer Fresnel's
diffraction at straight edge. Fraunhoffer's diffraction single slit, double silit,plane transmission gratings, Resolving power of microscope and telescope.
Polarisation, production of plane. Cricularly and elliptically polarised lights. Nicol's prism. Quarter wave plate. Half-shade polarimeter Babinet's compernsator.
Bohr's theory of hydrogen spectra. Principle action Ruby laser.
Maxwell's equations. Equation of plane electromagnetic waves and its
solution.
PRACTICAL
Time: 3 Hours ]. Full Marks: 25
The Syllabus shall include following experiments.
1. Refractive index by Spectrometer
2. Wavelength by Newton's ring method.
3. Wavelength by plane transmission grating.
4 Magnifying power of telescope.
5. Magnifying power of microscope.
6. Resolving power of telescope.
7. Measurement of dip by (i)Dip-circle (ii) Earth's inductor
8. Figure merit of moving coil galvanometer.
9. Calibration of Ammeter and voltmeter by Potentiometer.
10. B. G. constant and Log decrement.
11. Measurements of low and high resistance
12 Temperature variation of electrical resistance.
13 Characteristics of value and semi conductor diodes.
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