India Exams | CBSE Class XI/XII (NCERT), 2021, 2022, 2023

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CBSE Class XI / XII, 2021, 2022, 2023

Download CBSE Class XI (NCERT), 2021, 2022, 2023, Physics Syllabus (13687 Downloads so far)

PHYSICS
COURSE STRUCTURE
CBSE XI (NCERT), 2021, 2022, 2023 (Theory)
One Paper	Three Hours	Max Marks. 70
Unit	Titles	Weightage
I	Physical World & Measurement	03
II	Kinematics	10
III	Laws of Motion	10
IV	Work, Energy & Power	06
V	Motion of System of particles & Rigid Body	06
VI	Gravitation	05
VII	Properties of Bulk Matter	10
VIII	Thermodynamics	05
IX	Behaviour of Perfect Gas & Kinetic Theory of gases	05
X	Oscillations & Waves	10
	Total	70

Unit I: Physical World and Measurement
Physics - scope and excitement; nature of physical laws; Physics, technology and society. 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
Frame of reference (Internal and non-internal frames). 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, position-time graphs, relations for uniformly accelerated motion (graphical treatment).Elementary concepts of differentiation and integration for describing motion. Scalar and vector quantities: Position and displacement vectors, general vectors andnotation, 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. Motion in a plane. Cases of uniform velocity and uniform acceleration-projectile motion. Uniform circular motion.

Unit III: 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.

Dynamics of uniform circular motion: Centripetal force, examples of circular motion (vehicle on level circular road, vehicle on banked road)

Unit IV: Work, Energy and Power
Scalar product of vectors. 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: conservation of mechanical energy (kinetic and potential energies); non-conservative forces: elastic and inelastic collisions in one and two dimensions.

Unit V: Motion of System of Particles and Rigid Body
Centre of mass of a two-particle system, momentum conversation and centre of mass motion. Centre of mass of a rigid body; centre of mass of uniform rod.
Vector product of vectors; moment of a force, torque, angular momentum, conservation of angular momentum with some examples.
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). Statement of parallel and perpendicular axes theorems and their applications.

Unit VI: Gravitation
Keplar's laws of planetary motion. The universal law of gravitation. Acceleration due to gravity and its variation with altitude and depth and rotation of earth.
Gravitational potential energy; gravitational potential. Escape velocity.
Orbital velocity of a satellite. Geo-stationary satellites.

Unit VII: Properties of Bulk Matter
Elastic behaviour, Stress-strain relationship, Hooke's law, Young's modulus, bulk modulus, shear, modulus of rigidity. 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, Reynold's number, streamline and turbulent flow. Bernoulli's theorem and its applications. Surface energy and surface tension, angle of contact, application of surface tension ideas to drops, bubbles and capillary rise.

Heat, temperature, thermal expansion of solids, liquids and gases, ideal gas laws, isothermal and adiabatic processes; anamolous expansion and its effect, specific heat capacity: C_p, C_v- calorimetry; change of state - specific latent heat capacity. Heat transfer-conduction, convection and radiation, Blackbody radiation Kirchoff's Law, absorption and emission powers and greenhouse effect, thermal conductivity, Newton's law of cooling, Wein's displacement law, Stefan's law.

Unit VIII: Thermodynamics
Thermal equilibrium and definition of temperature (zeroth law of thermodynamics). Heat, work and internal energy. First law of thermodynamics.
Second law of thermodynamics: reversible and irreversible processes.
Heat engines and refrigerators.

Unit IX: Behaviour of Perfect Gas and Kinetic Theory
Equation of state of a perfect gas, work done on compressing a gas. Kinetic theory of gases - assumptions, concept of pressure. Kinetic energy and temperature; rms speed of gas molecules; degrees of freedom, law of equipartition of energy (statement only) and application to specific heats of gases; concept of mean free path, Avogadro's number.

Unit X: Oscillations and Waves
Periodic motion - period, frequency, displacement as a function of time. Periodic functions. Simple harmonic motion (S.H.M) and its equation; phase; oscillations of a 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. Wave motion. Longitudinal and transverse waves, 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.

Recommended Textbooks:
1. Physics Part-I, Textbook for Class XI, Published by NCERT
2. Physics Part-II, Textbook for Class XI, Published by NCERT

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