SYLLABUS FOR JEE (Main) 2020

                       PHYSICS

The sylabus contains two Sections - A and B.

                      Section-A

pertains to the Theory Part having 80% weightage, while 

                    Section- B 

contains Practical Component (Exsperimental

Skils) having 20% weightage.

 

                   SECTION-A

UNITI: PHYSICSAND MEASUREMENT

Physics, technology and society. S I units,

Fundamental and derived units. Least count, aceurcy

and precision of measuring instruments, Errors in

measurement, Dimensions of Physical quantities,

dimensional analysis and its applbcations.

UNIT2: KNEMATICS

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

position-time graphs, relations for uniformly

accelerated motion. Scalars and Vectors, Vector

addition and Subtraction, Zero Vector, Scalar and

Vector products, Unit Vector, Resolution of a Vector.

Relative Velocity, Motion in a plane, Projectile Motion,.

UNIT3: LAWS OFMOTON

Uniform Circular Motion.

d

Force and Inertia, Newton's First Law of motion;

Momentum, Newton's Second Law of motion;

Impulse; Newton's Third Law of motion. Law of

conservation of lincar momentum and its applications,

Equilibrium of concurrent forces.

Static and Kinetic friction, laws of friction, rollingg

friction.

Dynamics of uniform circular motion: Centripetal force

and its applications

UNIT4: WORK,ENERGYANDPOWER

Work done by a constant force and a variable force

kinetic and potential energies, workenergy theorem,

power.

Potential energy of a spring, conservation of

mechanical energy, conservative and nonconservative

forces; Elastic and inelastic collisions in one and two

dimensions.

UNTT5: ROTATIONALMOTION

Centre of mass of a two-particle system, Centre of

mass of a rigid body; Basic concepts of rotational

mas oment of a force, torque, a m and its

conservation ot angular momentum and ts

ppicatons, moment or mcrta, Taidus or gyTratnon

Values of moments of inerta 1or simple geometrical

their applications. Rigid body rotation c

objects, parallel and perpendicular axes theorems and

rotational motion.

UNIT6: GRAVITATION

The universal law of gravitation. Acceleration due to

gravity and its variation with altitude and depth.

Kepler's laws of planetary motion. Gravitational

potential energy: gravitational potential. Escape

velocity. Orbital velocity of a satellite. Geo-stationary

satellites.

UNIT7: PROPERTIES OFSOLIDSAND LIQUIDS

Law Youn p, tookes

Law, Youngs modulus, bulk modulus, modulus of

rigidity. Pressure due toa fluid column; Pascaľ's law

and its applications, Visecosity, Stokes' law, terminal

velocity, streamline and turbulent flow, Reynolds

number. Bernoulli's principle and its applications.

Surface energy and surface tension, angle ot contact,

application of surface tension drops, bubbles and

capillary rise. Heat, temperature, thermal expansion;

specific heat capacity, calorimetry: change of state,

latent heat. Heat transfer-conduction, convection and

radiation, Newton's law of cooling.

UNIT8: THERMODYNAMIS

Thermal equilibrium, zeroth law of thermodynamics,

concept of temperature. Heat, work and internal

energy. First law of thermodynamics. Second law of

themodynamics: reversible and imeversible processes.

Carnot engine and its efficiency.

UNIT9: KINETICTHEORY OFGASES

Equation of state of a perfect gas, work doneon

compressing a gas.Kinetic theory of gases

assumptions, concept of pressure. Kinetic energy and

temperature: ms speed of gas molecules; Degrees of

freedom, Law of equipartition of energy.applications

to specific heat capacities of gases; Mean free path,

Avogadro's number.

UNIT 10:OSCILLATIONSAND WAVES

Periodie motion-period, frequency. displacement as a

function of time. Periodic functions, Simple harmonic

motion (S.H.M.) and its cquation; phase; oscillations

of a spring-restoring force and force constant; energy

in S.H.M. kinetic and potential energies; Simple

pendulum- derivation ofexpression for its time period;

Free, forced and damped oscillations, resonance.

Wave motion. Longitudinal and transverse waves,

speed of a wave. 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 in sound

UNITI1l: ELECTROSTATICS

Electric charges: Conservation of charge, Coulomb's

law-forces between two point charges, forces between

multiple charges; superposition principle and

continuous charge distribution.

Electric ficld: Electric field due to a point charge, Electric

ficld lines, Electric dipole, Electric field due to a dipole,

Torque on a dipole in a uniform electric field.

Electric flux, Gauss's law and its applications to find

field due to infinitely long uniformly charged straight

wire, uniformly charged infinite plane sheet and

uniformly charged thin spherical shell. Electric

potential and its calculation for a point charge, electic

dipole and system of charges; Equipotential surfaces,

Electrical potential energy of a system of two point

charges in an electrostatic field.

Conductors and insulators, Dielectrics and electric

polarization, capucitor, combination of capacitors in

series and in parallel, capacitance of a parallel plate

capacitor with and without dielectric medium between

the plates, Energy stored in a capacitor

UNIT12:CURRRENTLECTRICITY

Electric curent, Drift velocity, Ohms law, Electical

resistance, Resistances of different materials, V-I

characteristics of Ohmic and nonohmic conductors,

Electrical energy and power, Electrical resistivity,

Colour code for resistors; Series and parallel

combinations of resistors; Temperature dependence

of resistance.

Electrie Cell and its Internal resistance, potential

difference and emf of a cell, combination of cells in

series and in parallel. Kirchhoff's laws and their

applications. Wheatstone bridge. Metre bridge.

Potentiometer principle and its applications.

UNITI3:MAGNETICEFFECTSOFCURRENTAND

MAGNETSM

Biot-Savart law and its application to current carrying

circular loop. Ampere's law and its applications to

infinitely long current carrying straight wire and

solenoid. Force on a moving charge in uniform

magnetic and electric fields. Cyclotron.

Force on a current-carrying conductor in a uniform

magnetic field. Force between two parallel current-

carrying conductors-definition of ampere. Torque

experienced by a current loop in uniform magnetic

field; Moving coil galvanometer, its current sensitivity

and conversion to ammeter and voltmeter.

Current loop as a magnetic dipole and its magnetic

dipole moment. Bar magnet as an cquivalent solenoid.,

magnetic field lines; Earth's magnetic ficld and

magnetic elements. Parä-, dia- and fero- magnetic

substances.

Magnetic susceptibility and permeability, Hysteresis,

Electromagnets and permanent magnets.

UNIT14: ELECTROMAGNETICINDUCTIONAND

ALTERNATING CURRENIS

Electromagnetic induction; Faraday's law, induced emf

and current; Lenz's Law, Eddy currents. Self and mutual

inductance. Alternating cuTents, peak and rms value

of alternating currentu voltage; reactance and

impedance; LCR series circuit, resonance: Quality

factor, power in AC circuits, wattless current. AC

generator and transformer.

UNITIS15:ELECTROMAGNETIC WAVES

Electromagnetic waves and their characteristics.

Transverse nature of electromagnetic waves.

Electromagnetic spectrum (radio waves, microwaves,

infrared, visible, ultraviolet, Xrays, gamma rays).

Applications of e.m. waves.

UNTT 16: OPTICS

Reflection and refraction of light at plane and spherical

surfaces, mirror formula, Total internal reflection and

its applications, Deviation and Dispersion of light by

a prism, Lens Formula, Magnification, Power of a Lens,

Combination of thin lenses in contact, Microscope

and Astronomical Telescope (reflecting and refracting)

and their magnityingpowers.

Wave optics: wavefront and Huygens' principle, Laws

of reflection and refraction using Huygen's principle.

Interference, Young's double slit experiment and

expression for fringe width, coherent sources and

sustained interference of light. Diffraction due to a

single slit, width of central maximun

olvi

of micre

of plane polarized lieht an D sicS liaw, uses

of plane polarized light and Polaroids.

UNIT 17:DUALNATUREOFMATTERANDRADIATION

Dual nature of radiation. Photoelectric efect. Hert

and Lenard's observations; Einsteins pholocic

le nat

rature ot partucie, de Broglie relaton. Davisson-uemer

epeTinenl.

UNTT 18:ATOMSAND NUCILEI

Alpha-particle scattering experiment; Rutherford's

model of atom; Bohr model., energy levels, hydrogenm

spectrum. Composiion and size or nucieus, atome

masses, Isotopes, Isobars; Isotones. Radioactivity-

alpha, beta and gamma particles/rays and their

properties; radioactive decay law. Mass-energy

relation, mass defeet; binding energy per nucleon and

its variation with mass number, nuclear fission and

fusion.

UNTT 19: ELECTRONICDEVICES

Semiconductors; semiconductor diode: 1-V

characteristics in forward and reverse bias; diode as a

rectifier; 1-V characteristics of LED. photodiode, solar

cell and Zener diode; Zener diode as a voltage

regulator. Junction transistor, transistor action,

characteristics of a transistor; transistor as an amplifier

(common emitter configuration) and oscillator. Logic

gates (OR, AND, NOT, NAND and NOR). Transistor

as a switch.

UNIT 20: COMMUNICATIONSYSTEMS

Propagation of electromagnetic waves in the

atmosphere, Sky and space wave propugation, Nced

for modulation, Amplitude and Frequency

Modulation, Bandwidth of signals, Bandwidth of

Transmission medium, Basic Elements of a

Communication System (Block Diagram only).

                     SECTION-B

UNIT21:EXPERIMENTALSKILLS

Familiarity with the basic approach and observations

of the experiments and activities:

Vemier callipers-tts use to mecasure internal and

external diameter and depth of a vessel.

2 Serew gauge-its use to determine thickness

diameter of thin sheet/wire.

3 Simple Pendulum-dissipation of energy by

plotting a graph between square of amplitude and

me.

4 Metre Scale - mass of a given object by principle

of moments.

5. Young's modulus of elasticity of the material of a

metallic Wire.

6 Surface tension of water by capillary rise and effect

detergents.

7. Co-eficient of Viscosity of a given viscous liquid

by measuring teminal velocity of a given spherical

body.

8 Ploting a cooling curve for the relationship

between the temperature ot a hot body and ume.

9. Speed of sound in air at room temperature using

resonance tube.

10. Specific heat capacity of a given ) solid and (i)

iquid by method of mixtures.

11. Resistivity of the material of a given wire usings

metre bri

12. Resistance of a given wire using Ohm's law.

13. Potentiometer

Compurison of emf of two primary cells

()Determination of intenal resistance of a cell.

  

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