# NEET PHYSICS: PLUS ONE SYLLABUS

PHYSICS: CONTENTS OF CLASS XI SYLLABUS

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

• A frame of reference, Motion in a straight line; Position-time graph, speed, and velocity. Uniform

and non-uniform motion, average speed, and instantaneous velocity. Uniformly accelerated

motion, velocity-time, and position-time graphs, 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, general vectors and notation,

equality of vectors, multiplication of vectors by a real number; addition and subtraction of vectors.

Relative velocity.

• Unit vectors. Resolution of a vector in a plane-rectangular component.

• Scalar and Vector products of Vectors. 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,

lubrication.

• 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

• Work done by a constant force and variable force; kinetic energy, work-energy theorem, power.

• Notion of potential energy, the potential energy of a spring, conservative forces; conservation of

mechanical energy (kinetic and potential energies); nonconservative forces; motion in a vertical

circle, elastic and inelastic collisions in one and two dimensions.

UNIT V: Motion of System of Particles and Rigid BodyCentre 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 uniform rod.

• Moment of a force,-torque, angular momentum, conservation of angular momentum with some

examples.

• Equilibrium of rigid bodies, rigid body rotation, and equation of rotational motion, comparison of

linear and rotational motions; the moment of inertia, the radius of gyration. Values of M.I. for

simple geometrical objects (no derivation). Statement of parallel and perpendicular axes theorems

and their applications.

UNIT VI: 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; gravitational potential. Escape velocity, orbital velocity of a

satellite. Geostationary satellites.

UNIT VII: Properties of Bulk Matter

• Elastic behavior, Stress-strain relationship. Hooke’s law, Young’s modulus, bulk modulus, shear,

modulus of rigidity, poisson’s ratio; elastic energy.

• Viscosity, Stokes’ law, terminal velocity, Reynold’s number, streamline and turbulent flow.

Critical velocity, Bernoulli’s theorem and its applications.

• Surface energy and surface tension, angle of contact, excess of pressure, application of surface

tension ideas to drops, bubbles and capillary rise.

• Heat, temperature, thermal expansion; thermal expansion of solids, liquids, and gases. Anomalous

expansion. Specific heat capacity: Cp, Cv- calorimetry; change of state – latent heat.

• Heat transfer- conduction and thermal conductivity, convection and radiation. Qualitative ideas of

Black Body Radiation, Wein’s displacement law, and Green House effect.

• Newton’s law of cooling and 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. Isothermal and adiabatic processes.

• Second law of the 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;

degrees of freedom, law of equipartition of energy (statement only) and application to specific

heat capacities of gases; concept of mean free path.

UNIT X: Oscillations and Waves

• Periodic motion-period, frequency, displacement as a function of time. Periodic functions. Simple

harmonic motion(SHM) and its equation; phase; oscillations of a spring-restoring force and force

constant; energy in SHM –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.