# ** UPDATED CBSE CLASS XI Physics Syllabus: 2018-19

Hi friends, today we are going to discuss you the latest Syllabus of Class XI Physics Syllabus. As you know very well that Central Board of Secondary Education (CBSE) has its own curriculum and they hold the supreme authority to change it further for the benefit of students.

So it’s always a wise decision to keep an eye on what happening around with the subject you are going to learn. This year CBSE made little bit changes in class XI Physics Syllabus. Let us have a look at the updated CBSE class XI Physics Syllabus for the academic year 2017-18

## CBSE Class XI Physics Syllabus (2018-19 Session)

PHYSICS (Code No. 042)
COURSE STRUCTURE
Class XI (Theory) (2017-18)
Time: 3 hrs.                                                                                                                                                                                                Max Marks: 70

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 No. of Periods Marks Unit–I Physical World and Measurement 10 23 Chapter–1: Physical World 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 12 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

Unit I: Physical World and Measurement  (10 Periods )
Chapter–1: Physical World
Physics-scope and excitement; nature of physical laws; Physics, technology, and society.
Chapter–2: Units and Measurements
Need for measurement: Units of measurement; systems of units; SI units, fundamental and derived units. Length, mass and time measurements; accuracy and precision of measuring instruments; errors in measurement; significant figures. Dimensions of physical quantities, dimensional analysis, and its applications.

Unit II: Kinematics  (24 Periods)
Chapter–3: Motion in a Straight Line
The frame of reference, Motion in a straight line: Position-time graph, speed, and velocity. Elementary concepts of differentiation and integration for describing motion, uniform and non-uniform motion, average speed and instantaneous velocity, uniformly accelerated motion, velocity – time and position-time graphs. Relations for uniformly accelerated motion (graphical treatment).

Chapter–4: Motion in a Plane
Scalar and vector quantities; position and displacement vectors, general vectors and their notations; equality of vectors, multiplication of vectors by a real number; addition and subtraction of vectors, relative velocity, Unit vector; resolution of a vector in a plane, rectangular components, Scalar and Vector product of vectors. Motion in a plane, cases of uniform velocity and uniform acceleration-projectile motion, uniform circular motion.

Unit III: Laws of Motion  (14 Periods)
Chapter–5: Laws of Motion
Intuitive concept of force, Inertia, Newton’s first law of motion; momentum and Newton’s second law of motion; impulse; Newton’s third law of motion. Law of conservation of linear momentum and its applications. 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 (12 Periods)
Chapter–6: Work, Energy, and Power
Work was done by a constant force and a variable force; kinetic energy, work-energy theorem, power. The notion of potential energy, the potential energy of a spring, conservative forces: conservation of mechanical energy (kinetic and potential energies); 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 (18 Periods)
Chapter–7: System of Particles and Rotational Motion
Centre of a mass of a two-particle system, momentum conservation and center of mass motion. Centre of a mass of a rigid body; a center 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, the radius of gyration, values of moments of inertia for simple geometrical objects (no derivation). Statement of parallel and perpendicular axes theorems and their applications.

Unit VI: Gravitation (12 Periods)
Chapter–8: Gravitation
Kepler’s laws of planetary motion, the 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, Geo-stationary satellites.

Unit VII: Properties of Bulk Matter  (24 Periods)
Chapter–9: Mechanical Properties of Solids
Elastic behavior, Stress-strain relationship, Hooke’s law, Young’s modulus, bulk modulus, the shear modulus of rigidity, 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), the effect of gravity on fluid pressure.
Viscosity, Stokes’ law, terminal velocity, streamline and turbulent flow, critical velocity, Bernoulli’s theorem and its applications.
Surface energy and surface tension, the angle of contact, an 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, Greenhouse effect.

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, isothermal and adiabatic processes.
The second law of thermodynamics: reversible and irreversible processes, Heat engine and refrigerator.

Unit IX: Behaviour of Perfect Gases and Kinetic Theory of Gases  (08 Periods )
Chapter–13: Kinetic Theory
The equation of state of a perfect gas, work done in compressing a gas.
Kinetic theory of gases – assumptions, the concept of pressure. Kinetic interpretation of temperature; rms speed of gas molecules; degrees of freedom, the law of equipartition of energy (statement only) and application to specific heat capacities of gases; the concept of a mean free path, Avogadro’s number.

Unit X: Oscillations and Waves (26 Periods)
Chapter–14: Oscillations
Periodic motion – time period, frequency, displacement as a function of time, periodic functions. Simple harmonic motion (S.H.M) and its equation; phase; oscillations of a loaded spring-restoring force and force constant; energy in S.H.M. Kinetic and potential energies; simple pendulum derivation of expression for its time period. Free, forced and damped oscillations (qualitative ideas only), resonance.

Chapter–15: Waves
Wave motion: Transverse and longitudinal waves, the speed of wave motion, displacement relation for a progressive wave, principle of superposition of waves, reflection of waves, standing waves in strings and organ pipes, fundamental mode and harmonics, Beats, Doppler effect.

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 15 Experiments [with a minimum of 6 from each section], to be performed by the students.
•  Record of at least 5 Activities [with a minimum of 2 each from section A and section B], to be demonstrated by the teachers.
•  Report of the project to be carried out by the students.

EVALUATION SCHEME

Time Allowed: Three hours (Max. Marks: 30)

 Two experiments one from each section 8+8 Marks Practical record (experiment and activities) 6 Marks Investigatory Project 3 Marks Viva on experiments, activities and project 5 Marks Total 30 Marks

SECTION–A

Experiments
1. To measure the 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.
2. To measure the diameter of a given wire and thickness of a given sheet using screw gauge.
3. To determine the volume of an irregular lamina using screw gauge.
4. To determine the radius of curvature of a given spherical surface by a spherometer.
5. To determine the mass of two different objects using a beam balance.
6. To find the weight of a given body using parallelogram law of vectors.
7. Using a simple pendulum, plot its L-T2 graph and use it to find the effective length of second’s pendulum.
8. To study the variation of the time period of a simple pendulum of a given length by taking bobs of the same size but different masses and interpret the result.
9. To study the relationship between the force of limiting friction and normal reaction and to find the coefficient of friction between a block and a horizontal surface.
10. To find the downward force, along with an inclined plane, acting on a roller due to the gravitational pull of the earth and study its relationship with the angle of inclination θ by plotting graph between force and sinθ.

Activities
(for the purpose of demonstration only)
1. To make a paper scale of given least count, e.g., 0.2cm, 0.5 cm.
2. To determine the mass of a given body using a meter scale by the principle of moments.
3. To plot a graph for a given set of data, with proper choice of scales and error bars.
4. To measure the force of limiting friction for rolling of a roller on a horizontal plane.
5. To study the variation in the range of a projectile with the angle of projection.
6. To study the conservation of energy of a ball rolling down on an inclined plane (using a double inclined plane).
7. To study dissipation of energy of a simple pendulum by plotting a graph between square of amplitude and time.

SECTION–B

Experiments
1. To determine Young’s modulus of elasticity of the material of a given wire.
2. To find the force constant of a helical spring by plotting a graph between load and extension.
3. To study the variation in volume with pressure for a sample of air at the constant temperature by plotting graphs between P and V, and between P and 1/V.
4. To determine the surface tension of water by capillary rise method.
5. To determine the coefficient of viscosity of a given viscous liquid by measuring terminal velocity of a given spherical body. 6. To study the relationship between the temperature of a hot body and time by plotting a cooling curve.
7. To determine specific heat capacity of a given solid by the method of mixtures.
8. To study the relation between frequency and length of a given wire under constant tension using sonometer.
9. To study the relation between the length of a given wire and tension for constant frequency using sonometer.
10. To find the speed of sound in air at room temperature using a resonance tube by two resonance positions.

Activities
(for the purpose of demonstration only)
1. To observe the change of state and plot a cooling curve for molten wax.
2. To observe and explain the effect of heating on a bi-metallic strip.
3. To note the change in the level of liquid in a container on heating and interpret the observations.
4. To study the effect of detergent on the surface tension of water by observing capillary rise.
5. To study the factors affecting the rate of loss of heat of a liquid.
6. To study the effect of load on depression of a suitably clamped meter scale loaded at (i) its end (ii) in the middle.
7. To observe the decrease in pressure with an increase in velocity of a fluid.

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 practicals(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
1. To measure the diameter of a small spherical/cylindrical body using vernier calipers.
2. To measure the internal diameter and depth of a given beaker/calorimeter using vernier calipers and hence find its volume.
3. To measure the diameter of given wire using screw gauge.
4. To measure the thickness of a given sheet using screw gauge.
5. To determine the mass of a given object using a beam balance.
6. To find the weight of given body using the parallelogram law of vectors.
7. Using a simple pendulum plot L-T and L-T2 graphs. Hence find the effective length of second’s pendulum using appropriate length values.
8. To find the force constant of given helical spring by plotting a graph between load and extension.
9. (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.
10. 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:
1. Physics Part-I, Textbook for Class XI, Published by NCERT
2. Physics Part-II, Textbook for Class XI, Published by NCERT
3. Laboratory Manual of Physics, Class XI Published by NCERT
4. The list of other related books and manuals brought out by NCERT (consider multimedia also).

QUESTION PAPER DESIGN

Time 3 Hours                                                                                                                                                                        Max. Marks: 70

 S. No. Typology of Questions Very Short Answer (VSA) (1 mark) Short Answer-I (SA-I) (2 marks) Short Answer –II (SA-II) (3 marks) Value-based question (4 marks) Long Answer (LA) (5 marks) Total Marks % Weightage 1 Remembering- (Knowledge-based Simple recall questions, to know specific facts, terms, concepts, principles, or theories, identify, define, or recipe information) 2 1 1 – – 7 10 2 Understanding-(Comprehension –to be familiar with the meaning and to understand conceptually, interpret, compare, contrast, explain, paraphrase information) – 2 4 – 1 21 30% 3 Application – (Use abstract – information in a concrete situation, to apply knowledge to new situations, Use given content to interpret a situation, provide an example, or solve a problem) – 2 4 – 1 21 30% 4 Higher Order Thinking Skills -(Analysis & Synthesis- Classify, compare, contrast, or differentiate between different pieces of information, Organize and/or integrate unique pieces of information from a variety of sources) 2 – 1 – 1 10 14% 5 Evaluation – (Appraise, judge, and/or justify the value or worth of a decision or outcome, or to predict outcomes based on values) 1 – 2 1 – 11 16% TOTAL 5×1=5 5×2=10 12×3=36 1×4=4 3×5=15 70(26) 100%

Question Wise Break Up

 Type of Question Mark per Question Total No. of Questions Total Marks VSA 1 5 05 SA-I 2 5 10 SA-II 3 12 36 VBQ 4 1 04 LA 5 3 15 Total 26 70

1. Internal Choice: There is no overall choice in the paper. However, there is an internal choice in one question of 2 marks weightage, one question of 3 marks weightage and all the three questions of 5 marks weightage.
2. The above template is only a sample. Suitable internal variations may be made for generating similar templates keeping the overall weightage to a different form of questions and typology of questions same.