physics(4th sem) Group:A(wave and ocillation):- free vibration, forced vibration, resonance and sharpness of resonance...
physics(4th sem)
Group:A(wave and ocillation):-free vibration, forced vibration, resonance and sharpness of resonance, composition of simple harmonic vibration, Lissajous figure, Equation of wave motion, energy and intensity of plane progressive wave, principle of superposition of sound waves, beats, combination of tone, determination of frequency by method of beats, stationary method, Doppler effect.
Expression for velocity of sound in homogenous medium, Laplaces correction to newton’s experiment.
Electrically maintained tuning fork, determination of frequency of tuning fork.
Group:B(Ray and physical Optics):-Fermat’s principles, deduction of laws of reflection and refraction for plane surface using Fermat’s principle, Deduction of lens maker formula, thick lens, Cardinal points(Deduction not necessary), Focal length of two thin lenses separated by a distance, chromatic aberration and correction, achromatic combination of lens and prism.
Defect of image- monochromatic aberration and chromatic aberration, Different type of monochromatic aberration and their explanation.
Eyepiece: Ramsden and Huygen eyepiece-their ray diagrams, principles and relative advantage and disadvantage.
Interference of light: Condition of sustained interference by analytical treatment. Dvision of amplitude and division of wave front, Methods for production of interference fringes biprism, Lloyd’s mirror, measurement of wavelength, measurement of thickness of thin filmrefrected and transmitted light, Haidinger’s fringe, theory of Newton rings, Determination of wavelength and refractive index.
Polarisation of light: Different method of production of polarized light, Brewster’s law, double refraction, Nicol prism-construction and uses, Polaroid’s, refraction through uniaxial crystal, quarter and half-wave plate, Babinets compensator, Optical activity, Fresnel explanation of optical rotation and its verification, half shade plate, rotary dispersion and polarimeters.
Physics practical
- Determination of the reduction factors of a tangent galvanometer with copper voltmeter and hence to determine the value of H(the horizontal components of earth magnetic field)
- Determination of the resistance per unit length of a meterbridge wire by Carey Foster’s method.
- Determination of the value of given low resistance by the drop of potential methods with meterbridge.
- Comparison of the moments of two given bar magnets by deflection magnetometer.
- Determination of focal length of two given convex lenses and their combination by displacement method.
- Determination of the coefficient of linear expansion of the given rod by optical lever method.
- Measurements of current by potentiometer when a cell of known e.m.f. is given for calliberation
- Conversion of given galvanometer into ammeter and to caliberate it with the help of copper voltameter.
- Determination of the modulus of rigidity of the material in the form of cylinder by statistical method.
- Convert a given galvanometer into voltmeter and caliberate it.
- Determination of EMF of a cell by potentiometer.
- Determiantion of coefficient viscosity if water by Poisseulies method.
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