# NEW HORIZON PRE UNIVERSITY COLLEGE LESSON PLAN FOR THE ACADEMIC YEAR Department of PHYSICS (II PUC)

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1 NEW HORIZON PRE UNIVERSITY COLLEGE LESSON PLAN FOR THE ACADEMIC YEAR Department of PHYSICS (II PUC) Week Month: June 4 Electric charges and properties Coulomb s law superposition principle Electric field Application of superposition principle to find of a system of changes. Continuous charge distribution. Electric dipole, dipole moment. Electric field due to a dipole a) Axis b) Equatorial plane Derive torque on an electric dipole in an uniform Electric field Electric field lines. Electric flux. Gauss law and its applications Numerical problems. Electric potential Potential difference Potential due to a electric point charge, due to dipole. Variation of electric potential with distance between a point charge and an electric dipole. Equipotential surfaces: Electric potential energy upto expression for the electric potential energy of an electric dipole placed in a uniform electric field. Electrostatics of conductors Dielectrics and electric polarization. Capacitors and capacitance Parallel plate capacitor Combination of capacitors. Series and parallel Derive energy stored in a capacitor van de Graff generator Numerical problem. 4

2 Month: July Week 1 st Limitations of ohm s law,drift velocity of electrons and origin of Current Electricity Ohm s law Resistivity and conductivity. 10 resistivity. Derivation Color code of resistors. Temperature dependence of resistivity of metals and semiconductors. Electrical energy and power. Power loss. Combinations of resistors. Series parallel. Cells: internal resistance, terminal potential difference and EMF of a cell Derivation of current drawn by external resistance. Combination of cells Expression for equivalent emf and equivalent internal resistance in series and parallel combination. Kirchhoff s rules Wheatstone bridge. Balancing condition Meter Bridge. Potentiometer Principle and mention of applications Numerical I Unit Test (13,14,1 th ) Reflection of light by spherical mirrors. f= R/2 (derive), mirror equation, linear magnification Refraction of light (laws) TIR, Critical angle. Refraction at spherical surfaces n, u, v r relation, lens maker s formula, linear magnification power of a lens Combination of their prism. Refraction through prism. Derive prism formula Dispersion scattering of light, blue color of the sky etc Optical instruments correction of eye defects, simple microscope Compound microscope, Telescopes, Numerical problems 4

3 Week Month: August Wave front Huygen s principle derive Snell s law derive law 4 of reflection. Refraction of a plane wave Theory of interference conditions for constructive and destructive interference Young s experiment Derive fringe width Diffraction due to a single slit. Conditions for maxima and minima. Resolving power of optical instruments. Polarization Polaroid uses Malu s law, Polarisation by reflection Brewster s angle Brewster s law. Numerical problem Dual nature of radiation and matter Electron emission. Definition of electron volt. Types of electron emission. Photoelectric effect. Hertz observation Hallwach s and lenard s observation work function, threshold frequency and stopping potential of experimental Experimental setup to study P.E.E and observations. Einstein s P.E.equation Explanation results Particle nature of light. Characteristics of photon. Wave nature of matter. De Broglie hypothesis, relation. De-Broglie wavelength relation in terms of K.E and acceleration potential. Davisson and Germer experiment. Brief explanation of conclusion. Numerical problem II Unit Test(28,29,30 th ) 3 3

4 Week Month: September. Energy bands in solids Classification p-n junction, 6 semiconductor diode Biasing I-V Characteristics, cut in voltage, breakdown voltage and reverse saturation current. on of solids on the basis of energy bands. Semiconductors Intrinsic and Extrinsic (p & n type) Diode as a rectifier. Optoelectronic junction devices. Photodiode, LED and solar cell Half wave and full wave. Zener diode IV Characteristics Zener diode as a voltage regulator 6 Junction transistor types, transistor action characteristics i/p and o/p characteristics. Input resistance, o/p resistance and current amplification factor. Transistor as a switch. Transistor as an amplifier Derivation of current gain and voltage gain Transistor as an oscillator Logic gates. Logic symbol and truth table of NOT, OR, AND, NAND, NOR gates Concept of Magnetic field Oersted s experiment. Force on a moving charge in uniform magnetic and electric field Motion of a charge in a uniform Magnetic field Derive radius and angular frequency of circular motion of a change in magnetic field. Velocity selector, cyclotron, Biot savart s law. Derive magnetic field on the axis of a circular loop-right hand thumb rule Ampere s circuital law Applications long straight current carrying wire. Solenoid and toroid. Derive force between two parallel current carrying conductors Define Ampere Current loop as a magnetic dipole. Moving coil galvanometer. Conversion of galvanometer into ammeter and voltmeter Numerical problems

5 Month: October Week 1 st Rivision for mid term 4 Mid Term Exams(9 th -14 th ) Magnetism and matter bar magnet Magnetic field lines. Bar magnet as a solenoid Time and period of oscillation of small compass needle. Gauss law. Earth s magnetic field and its elements. Magnetization, magnetic intensity, susceptibility, permeability Magnetic properties of materials, para, dia and ferro magnetic substances. Curie law and temperature Hysteresis loop. Retentivity and coercively permanent and electro magnets 3

6 Week Month: November EMI Faraday s law Lenz s law. Motional emf Eddy currents 2 Inductance Mutual inductance Self Inductance Derivation of energy stored in the coil. AC generator EMF in an ac generator Numerical problems Electrical resonance Resonant frequency Band width and sharpness (quality factor) Alternating current Instantaneous, peak, rms values of alternating current and voltage. Ac voltage applied to a resistor AC Voltage applied to an inductor AC Voltage applied to a capacitor AC Voltage applied to LCR Circuit Power in AC circuit Power factor in the case of resistive, inductive and capacitive circuit Meaning of wattless current LC oscillations frequency and total energy of LC Circuit Transformer Turns ratio Sources of energy losses. Numerical problems 8 Third Unit Test (27,28,30 th )

7 Week Month: December Alpha particle scattering. Geiger- Marsden experiment. Observation and conclusion. Rutherford s model of an atom - Definition of AMU Isotopes, isobars, isotones. Composition, size, mass and density of the nucleus E = mc 2, Nuclear binding energy. Mass defect B.E. Curve Nuclear force and characteristics. Nuclear fission and fusion with examples. Radio activity Decay law. Activity units. Half life, mean life., ß decay, Q Value of nuclear reaction. Numerical problems -. Electromagnetic waves (characteristics) - Displacement current Ampere Max well law - Speed of light Electromagnetic spectrum Communication systems Block diagram Basic terminology in communication system. Mention of band with signals propagation of EM waves. Need for modulation Block diagram of AM transmitter and AM receiver.. 2 4

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