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PHYSICS
Class XI-XII (Code No.42) (2022-23) Senior Secondary stage of school education is a stage of transition from general education to discipline-based focus on curriculum. The present updated syllabus keeps in view the rigor and depth of disciplinary approach as well as the comprehension level of learners. Due care has also been taken that the syllabus is comparable to the international standards. Salient features of the syllabus include: Emphasis on basic conceptual understanding of the content. Emphasis on use of SI units, symbols, nomenclature of physical quantities and formulations as per international standards. Providing logical sequencing of units of the subject matter and proper placement of concepts with their linkage for better learning. Reducing the curriculum load by eliminating overlapping of concepts/content within the discipline and other disciplines. Promotion of process-skills, problem-solving abilities and applications of Physics concepts. Besides, the syllabus also attempts to Strengthen the concepts developed at the secondary stage to provide firm foundation for further learning in the subject. Expose the learners to different processes used in Physics-related industrial and technological applications. Develop process-skills and experimental, observational, manipulative, decision making and investigatory skills in the learners. Promote problem solving abilities and creative thinking in learners. Develop conceptual competence in the learners and make them realize and appreciate the interface of Physics with other disciplines.
PHYSICS (Code No. 042) COURSE STRUCTURE Class XI – 2022 - 23 (Theory) Time: 3 hrs. Max Marks: 70 No. of Periods Marks Unit–I Physical World and Measurement 08 23 Chapter–2: Units and Measurements Unit-II Kinematics 24 Chapter–3: Motion in a Straight Line Chapter–4: Motion in a Plane Unit–III Laws of Motion 14 Chapter–5: Laws of Motion Unit–IV Work, Energy and Power 14 17 Chapter–6: Work, Energy and Power Unit–V Motion of System of Particles and Rigid Body 18 Chapter–7: System of Particles and Rotational Motion Unit-VI Gravitation 12 Chapter–8: Gravitation Unit–VII Properties of Bulk Matter 24 20 Chapter–9: Mechanical Properties of Solids Chapter–10: Mechanical Properties of Fluids Chapter–11: Thermal Properties of Matter Unit–VIII Thermodynamics 12 Chapter–12: Thermodynamics Unit–IX Behaviour of Perfect Gases and Kinetic Theory of Gases 08 Chapter–13: Kinetic Theory Unit–X Oscillations and Waves 26 10 Chapter–14: Oscillations Chapter–15: Waves Total 160 70
Equilibrium of concurrent forces, Static and kinetic friction, laws of friction, rolling friction, lubrication. Dynamics of uniform circular motion: Centripetal force, examples of circular motion (vehicle on a level circular road, vehicle on a banked road). Unit IV: Work, Energy and Power 14 Periods Chapter–6: Work, Energy and Power Work done by a constant force and a variable force; kinetic energy, work- energy theorem, power. Notion of potential energy, potential energy of a spring, conservative forces: non- conservative forces, motion in a vertical circle; elastic and inelastic collisions in one and two dimensions. Unit V: Motion of System of Particles and Rigid Body 18Periods Chapter–7: System of Particles and Rotational Motion Centre of mass of a two-particle system, momentum conservation and Centre of mass motion. Centre of mass of a rigid body; centre of mass of a uniform rod. Moment of a force, torque, angular momentum, law of conservation of angular momentum and its applications. Equilibrium of rigid bodies, rigid body rotation and equations of rotational motion, comparison of linear and rotational motions. Moment of inertia, radius of gyration, values of moments of inertia for simple geometrical objects (no derivation). Unit VI: Gravitation 12 Periods Chapter–8: Gravitation Kepler's laws of planetary motion, universal law of gravitation. Acceleration due to gravity and its variation with altitude and depth. Gravitational potential energy and gravitational potential, escape velocity,
orbital velocity of a satellite. Unit VII: Properties of Bulk Matter 24 Periods Chapter–9: Mechanical Properties of Solids Elasticity, Stress-strain relationship, Hooke's law, Young’s modulus, bulk modulus, shear modulus of rigidity (qualitative idea only), Poisson's ratio; elastic energy. Chapter–10: Mechanical Properties of Fluids Pressure due to a fluid column; Pascal's law and its applications (hydraulic lift and hydraulic brakes), effect of gravity on fluid pressure. Viscosity, Stokes' law, terminal velocity, streamline and turbulent flow, critical velocity, Bernoulli's theorem and its simple applications. Surface energy and surface tension, angle of contact, excess of pressure across a curved surface, application of surface tension ideas to drops, bubbles and capillary rise. Chapter–11: Thermal Properties of Matter Heat, temperature, thermal expansion; thermal expansion of solids, liquids and gases, anomalous expansion of water; specific heat capacity; Cp, Cv - calorimetry; change of state - latent heat capacity. Heat transfer-conduction, convection and radiation, thermal conductivity, qualitative ideas of Blackbody radiation, Wein's displacement Law, Stefan's law. Unit VIII: Thermodynamics 12 Periods Chapter–12: Thermodynamics Thermal equilibrium and definition of temperature zeroth law of thermodynamics, heat, work and internal energy. First law of thermodynamics, Second law of thermodynamics: gaseous state of matter, change of condition
PRACTICALS
Total Periods: 60 The record, to be submitted by the students, at the time of their annual examination, has to include:
- Record of at least 8 Experiments [with 4 from each section], to be performed by the students.
- Record of at least 6 Activities [with 3 each from section A and section B], to be performed by the students.
- Report of the project carried out by the students. EVALUATION SCHEME Time 3 hours Max. Marks: 30 Topic Marks Two experiments one from each section 7+ Practical record (experiment and activities) 5 One activity from any section 3 Investigatory Project 3 Viva on experiments, activities and project 5 Total 30 SECTION–A Experiments
- To measure diameter of a small spherical/cylindrical body and to measure internal diameter and depth of a given beaker/calorimeter using Vernier Callipers and hence find its volume.
- To measure diameter of a given wire and thickness of a given sheet using screw gauge.
- To determine volume of an irregular lamina using screw gauge.
- To determine radius of curvature of a given spherical surface by a spherometer.
- To determine the mass of two different objects using a beam balance.
- To find the weight of a given body using parallelogram law of vectors.
- Using a simple pendulum, plot its L-T^2 graph and use it to find the effective length of second's pendulum.
- To study variation of time period of a simple pendulum of a given length by taking bobs of same size but different masses and interpret the result.
- To study the relationship between force of limiting friction and normal reaction and to find the co- efficient of friction between a block and a horizontal surface.
- To find the downward force, along an inclined plane, acting on a roller due to gravitational pull of the earth and study its relationship with the angle of inclination θ by plotting graph between force and Sinθ. Activities
- To make a paper scale of given least count, e.g., 0.2cm, 0.5 cm.
- To determine mass of a given body using a metre scale by principle of moments.
- To plot a graph for a given set of data, with proper choice of scales and error bars.
- To measure the force of limiting friction for rolling of a roller on a horizontal plane.
- To study the variation in range of a projectile with angle of projection.
- To study the conservation of energy of a ball rolling down on an inclined plane (using a double inclined plane).
- To study dissipation of energy of a simple pendulum by plotting a graph between square of amplitude and time.
Practical Examination for Visually Impaired Students Class XI Note: Same Evaluation scheme and general guidelines for visually impaired students as given for Class XII may be followed. A. Items for Identification/Familiarity of the apparatus for assessment in practical’s (All experiments) Spherical ball, Cylindrical objects, vernier calipers, beaker, calorimeter, Screw gauge, wire, Beam balance, spring balance, weight box, gram and milligram weights, forceps, Parallelogram law of vectors apparatus, pulleys and pans used in the same ‘weights’ used, Bob and string used in a simple pendulum, meter scale, split cork, suspension arrangement, stop clock/stop watch, Helical spring, suspension arrangement used, weights, arrangement used for measuring extension, Sonometer, Wedges, pan and pulley used in it, ‘weights’ Tuning Fork, Meter scale, Beam balance, Weight box, gram and milligram weights, forceps, Resonance Tube, Tuning Fork, Meter scale, Flask/Beaker used for adding water. B. List of Practicals
- To measure diameter of a small spherical/cylindrical body using vernier calipers.
- To measure the internal diameter and depth of a given beaker/calorimeter using vernier calipers and hence find its volume.
- To measure diameter of given wire using screw gauge.
- To measure thickness of a given sheet using screw gauge.
- To determine the mass of a given object using a beam balance.
- To find the weight of given body using the parallelogram law of vectors.
- Using a simple pendulum plot L-T and L-T^2 graphs. Hence find the effective length of second’s pendulum using appropriate length values.
- To find the force constant of given helical spring by plotting a graph between load and extension.
- (i) To study the relation between frequency and length of a given wire under constant tension using a sonometer.
(ii) To study the relation between the length of a given wire and tension, for constant frequency, using a sonometer.
- To find the speed of sound in air, at room temperature, using a resonance tube, by observing the two resonance positions. Note: The above practicals may be carried out in an experiential manner rather than recording observations. Prescribed Books:
- Physics Part-I, Textbook for Class XI, Published by NCERT
- Physics Part-II, Textbook for Class XI, Published by NCERT
- Laboratory Manual of Physics, Class XI Published by NCERT
- The list of other related books and manuals brought out by NCERT (consider multimedia also). Note: The content indicated in NCERT textbooks as excluded for the year 2022-23 is not to be tested by schools.
Unit I: Electrostatics 26 Periods Chapter–1: Electric Charges and Fields Electric charges, Conservation of charge, Coulomb's law-force between two- point charges, forces between multiple charges; superposition principle and continuous charge distribution. Electric field, electric field due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in uniform electric field. Electric flux, statement of Gauss's theorem and its applications to find field due to infinitely long straight wire, uniformly charged infinite plane sheet and uniformly charged thin spherical shell (field inside and outside). Chapter–2: Electrostatic Potential and Capacitance Electric potential, potential difference, electric potential due to a point charge, a dipole and system of charges; equipotential surfaces, electrical potential energy of a system of two-point charges and of electric dipole in an electrostatic field. Conductors and insulators, free charges and bound charges inside a conductor. Dielectrics and electric polarization, capacitors and capacitance, combination of capacitors in series and in parallel, capacitance of a parallel plate capacitor with and without dielectric medium between the plates, energy stored in a capacitor (no derivation, formulae only). Unit II: Current Electricity 18 Periods Chapter–3: Current Electricity Electric current, flow of electric charges in a metallic conductor, drift velocity, mobility and their relation with electric current; Ohm's law, V-I characteristics (linear and non-linear), electrical energy and power, electrical resistivity and conductivity, temperature dependence of resistance, Internal resistance of a cell, potential difference and emf of a cell, combination of cells in series and in parallel, Kirchhoff's rules, Wheatstone bridge.
Unit III: Magnetic Effects of Current and Magnetism 25 Periods Chapter–4: Moving Charges and Magnetism Concept of magnetic field, Oersted's experiment. Biot - Savart law and its application to current carrying circular loop. Ampere's law and its applications to infinitely long straight wire. Straight solenoid (only qualitative treatment), force on a moving charge in uniform magnetic and electric fields. Force on a current-carrying conductor in a uniform magnetic field, force between two parallel current-carrying conductors-definition of ampere, torque experienced by a current loop in uniform magnetic field; Current loop as a magnetic dipole and its magnetic dipole moment, moving coil galvanometer- its current sensitivity and conversion to ammeter and voltmeter. Chapter–5: Magnetism and Matter Bar magnet, bar magnet as an equivalent solenoid (qualitative treatment only), magnetic field intensity due to a magnetic dipole (bar magnet) along its axis and perpendicular to its axis (qualitative treatment only), torque on a magnetic dipole (bar magnet) in a uniform magnetic field (qualitative treatment only), magnetic field lines. Magnetic properties of materials- Para-, dia- and ferro - magnetic substances with examples, Magnetization of materials, effect of temperature on magnetic properties. Unit IV: Electromagnetic Induction and Alternating Currents 24 Periods Chapter–6: Electromagnetic Induction Electromagnetic induction; Faraday's laws, induced EMF and current; Lenz's Law, Self and mutual induction.
Unit VII: Dual Nature of Radiation and Matter 08 Periods Chapter–11: Dual Nature of Radiation and Matter Dual nature of radiation, Photoelectric effect, Hertz and Lenard's observations; Einstein's photoelectric equation-particle nature of light. Experimental study of photoelectric effect Matter waves-wave nature of particles, de-Broglie relation. Unit VIII: Atoms and Nuclei 15 Periods Chapter–12: Atoms Alpha-particle scattering experiment; Rutherford's model of atom; Bohr model of hydrogen atom, Expression for radius of nth possible orbit, velocity and energy of electron in his orbit, of hydrogen line spectra (qualitative treatment only). Chapter–13: Nuclei Composition and size of nucleus, nuclear force Mass-energy relation, mass defect; binding energy per nucleon and its variation with mass number; nuclear fission, nuclear fusion. Unit IX: Electronic Devices 10 Periods Chapter–14: Semiconductor Electronics: Materials, Devices and Simple Circuits Energy bands in conductors, semiconductors and insulators (qualitative ideas only) Intrinsic and extrinsic semiconductors- p and n type, p-n junction Semiconductor diode - I-V characteristics in forward and reverse bias, application of junction diode - diode as a rectifier.
PRACTICALS
Total Periods 60 The record to be submitted by the students at the time of their annual examination has to include: Record of at least 8 Experiments [with 4 from each section], to be performed by the students. Record of at least 6 Activities [with 3 each from section A and section B], to be performed by the students. The Report of the project carried out by the students. Evaluation Scheme Max. Marks: 30 Time 3 hours Two experiments one from each section 7+7 Marks Practical record [experiments and activities] 5 Marks One activity from any section 3 Marks Investigatory Project 3 Marks Viva on experiments, activities and project 5 Marks Total 30 marks Experiments SECTION–A
- To determine resistivity of two / three wires by plotting a graph for potential difference versus current.
- To find resistance of a given wire / standard resistor using metre bridge.
- To verify the laws of combination (series) of resistances using a metre bridge. OR To verify the laws of combination (parallel) of resistances using a metre bridge.
between angle of incidence and angle of deviation.
- To determine refractive index of a glass slab using a travelling microscope.
- To find the refractive index of a liquid using convex lens and plane mirror.
- To find the refractive index of a liquid using a concave mirror and a plane mirror.
- To draw the I-V characteristic curve for a p-n junction diode in forward and reverse bias. Activities
- To identify a diode, an LED, a resistor and a capacitor from a mixed collection of such items.
- Use of multimeter to see the unidirectional flow of current in case of a diode and an LED and check whether a given electronic component (e.g., diode) is in working order.
- To study effect of intensity of light (by varying distance of the source) on an LDR.
- To observe refraction and lateral deviation of a beam of light incident obliquely on a glass slab.
- To observe diffraction of light due to a thin slit.
- To study the nature and size of the image formed by a (i) convex lens, or (ii) concave mirror, on a screen by using a candle and a screen (for different distances of the candle from the lens/mirror).
- To obtain a lens combination with the specified focal length by using two lenses from the given set of lenses. Suggested Investigatory Projects
- To study various factors on which the internal resistance/EMF of a cell depends.
- To study the variations in current flowing in a circuit containing an LDR because of a variation in (a) the power of the incandescent lamp, used to 'illuminate' the LDR (keeping all the lamps at a fixed distance).
(b) the distance of a incandescent lamp (of fixed power) used to 'illuminate' the LDR.
- To find the refractive indices of (a) water (b) oil (transparent) using a plane mirror, an equiconvex lens (made from a glass of known refractive index) and an adjustable object needle.
- To investigate the relation between the ratio of (i) output and input voltage and (ii) number of turns in the secondary coil and primary coil of a self-designed transformer.
- To investigate the dependence of the angle of deviation on the angle of incidence using a hollow prism filled one by one, with different transparent fluids.
- To estimate the charge induced on each one of the two identical Styrofoam (or pith) balls suspended in a vertical plane by making use of Coulomb's law.
- To study the factor on which the self-inductance of a coil depends by observing the effect of this coil, when put in series with a resistor/(bulb) in a circuit fed up by an A.C. source of adjustable frequency.
- To study the earth's magnetic field using a compass needle - bar magnet by plotting magnetic field lines and tangent galvanometer.
