**Physics Syllabus for Class 11 CBSE**

**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

**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.

Acceleration due to gravity and its variation with altitude and depth.

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

**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 banked road).

### Unit IV: Work, Energy and Power

**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

**Chapter–7: System of Particles and Rotational Motion**

Centre of the mass of a two-particle system, momentum conservation and centre of mass motion.

Centre of the mass of a rigid body; the centre of mass of a uniform rod.

Moment of a force, torque, angular momentum, laws 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

**Chapter–8: Gravitation**

Kepler’s laws of planetary motion.The universal law of gravitation.

Gravitational potential energy and gravitational potential. Escape velocity. Orbital velocity of a satellite. Geo-stationary satellites.

### Unit VII: Properties of Bulk Matter

**Chapter–9: Mechanical Properties of Solids**

Elastic behaviour, 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**

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 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; C_{p}, C_{v} – 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

**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

**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

**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 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. The principle of superposition of waves, a reflection of waves, standing waves in strings and organ pipes, fundamental mode and harmonics, Beats, Doppler effect.