Class XI 2008
XI PHYSICS (Theory)
Paper Three Hours Max Marks: 70
Physical World & Measurement 03
Laws of Motion
Work, Energy & Power
Motion of System of particles & Rigid Body 06
Properties of Bulk Matter
Behaviour of Perfect Gas & Kinetic Theory of gases
Oscillations & Waves
I: Physical World and Measurement (periods 10)
- scope and excitement; nature of physical laws; Physics, technology and
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.
of physical quantities, dimensional analysis and its applications.
II: Kinematics (Periods 30)
reference. Motion in a straight line: Position-time graph, speed and velocity.
and non-uniform motion, average speed and instantaneous velocity.
accelerated motion, velocity-time, position-time graphs, relations for uniformly
accelerated motion (graphical treatment).
concepts of differentiation and integration for describing motion.
and vector quantities: Position and displacement vectors, general vectors and
notation, equality of vectors, multiplication of vectors by a real number;
addition and subtraction of vectors. Relative velocity.
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.
III: Laws of Motion (Periods 16)
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.
of concurrent forces. Static and kinetic friction, laws of friction, rolling
of uniform circular motion: Centripetal force, examples of circular motion
(vehicle on level circular road, vehicle on banked road).
IV: Work, Energy and Power (Periods 16)
product of vectors. Work done by a constant force and a variable force; kinetic
energy, work-energy theorem, power.
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
V: Motion of System of Particles and Rigid Body (Periods 18)
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.
product of vectors; moment of a force, torque, angular momentum, conservation of
angular momentum with some examples.
of rigid bodies, rigid body rotation and equations of rotational motion,
comparison of linear and rotational motions; moment of inertia, radius of
of moments of inertia for simple geometrical objects (no derivation). Statement
of parallel and perpendicular axes theorems and their applications.
VI: Gravitation (Periods 14)
laws of planetary motion. The universal law of gravitation.
due to gravity and its variation with altitude and depth.
potential energy; gravitational potential. Escape velocity. Orbital velocity of
a satellite. Geo-stationary satellites.
VII: Properties of Bulk Matter (Periods 28)
behaviour, Stress-strain relationship, Hooke’s law, Young’s modulus, bulk
modulus, shear, modulus of rigidity.
due to a fluid column; Pascal’s law and its applications (hydraulic lift and
hydraulic brakes). Effect of gravity on fluid pressure.
Stokes’ law, terminal velocity, Reynold’s number, streamline and turbulent
flow. Bernoulli’s theorem and its applications.
energy and surface tension, angle of contact, application of surface tension
ideas to drops, bubbles and capillary rise.
temperature, thermal expansion; specific heat - calorimetry; change of state –
transfer-conduction, convection and radiation, thermal conductivity, Newton’s
law of cooling.
VIII: Thermodynamics (Periods 12)
equilibrium and definition of temperature (zeroth law of thermodynamics). Heat,
work and internal energy. First law of thermodynamics.
law of thermodynamics: reversible and irreversible processes. Heat engines and
IX: Behaviour of Perfect Gas and Kinetic Theory (Periods 8)
of state of a perfect gas, work done on compressing a gas.
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.
X: Oscillations and Waves (Periods 28)
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),
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.
Courtesy : CBSE.NIC.IN