# JEE Mains Physics Syllabus 2018

## Physics Syllabus JEE Mains 2018

The most demanding subject for a candidate aspiring for JEE Mains Exam, is Physics and without an in-depth understanding of JEE Mains Physics Syllabus for 2018, scoring in the exam becomes challenging. The main purpose of the candidate to go through JEE Mains Syllabus—Physicsis to understand and relate to the topics that are crucial. Moreover, the JEE Mains Physics Syllabus 2018 with weightage, brought to the candidates by Vidyakul, gives a clear understanding of the topics that carry the maximum weightage and thus must be prepared accordingly. This also benefits the candidate to identify and understand his/her strong and week points, thus guiding them to prepare for the exam strategically.

The Physics Syllabus for JEE Mains 2018 is an amalgamation for topics that candidates have studied in Class 11th as well as Class 12. Moreover, it follows strict guidelines from CBSE and picks up some topics directly from NCERT. Candidate must note that the JEE Mains Physics Syllabus 2018 has been divided into two sections—Section A and Section B. The first part, i.e. Section A, entails all the theoretical concepts and carries a weightage of about 80% in the exam. On the other hand, Section B entails all the experiment skills or practical knowledge with a weightage of about 20%. Candidates must have a thorough understanding of both the sections given in the JEE Mains Physics Syllabus 2018 which would ultimately help them to extract maximum marks in the examination.

The chapter-wise weightage and important topics of the entire JEE Mains Physics Syllabus 2018 is given below:

Physics JEE Mains Syllabus 2018 | |||

S. No. | Topics—Physics Syllabus of JEE Mains 2018 | Marking Weightage | Important Topics |

1 | Unit, Dimensions and Vectors | 4-5% | – |

2 | Kinematics | 2% | – |

3 | Laws of Motion | 4-5% | Important |

4 | Work, Power and Energy | 6-7% | – |

5 | Centre of Mass, Impulse and Momentum | 3-4% | – |

6 | Rotation | 3-4% | – |

7 | Gravitation | 3-4% | – |

8 | Simple Harmonic Motion | 3-4% | Important |

9 | Solids and Fluids | 3-4% | – |

10 | Waves | 5% | Important |

11 | Heat and Thermodynamics | 10-11% | Important |

12 | Optics | 10-11% | Important |

13 | Current Electricity | 6-7% | Important |

14 | Electrostatics | 7-8% | Important |

15 | Magnetics | 3-4% | – |

16 | Electromagnetic Induction and Alternating Current | 3-4% | – |

17 | Modern Physics | 10% | Important |

## JEE Mains 2018 Syllabus—Physics

Candidates must note that JEE Mains Physics Syllabus for 2018 is divided into two parts—Section A and Section B. The first section, that is, Section A includes the entire theory carries about 80% of the weightage. On the other hand, Section B tests the practical components or the experimental understanding of the candidate. This section carries 20% of the weightage.

Candidates are advised to follow the JEE Mains 2018 Syllabus for Physics, religiously to attain maximum marks in their JEE Mains Exam.

## JEE Mains Physics Syllabus-Section A

UNIT I: Physics and Measurement

• Physics, technology and society, S I units, Fundamental and derived units.

• Least count, 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.

• 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, Uniform Circular Motion.

UNIT III: Laws of Motion

• 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 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 and its applications.

UNIT IV: Work, Energy and Power

• Work done by a constant force and a variable force

• kinetic and potential energies, work energy theorem, power.

• Potential energy of a spring, conservation of mechanical energy, conservative and non-conservative forces

• Elastic and inelastic collisions in one and two dimensions.

UNIT V: Rotational Motion

• Centre of mass of a two-particle system, Centre of mass of a rigid body

• Basic concepts of rotational motion

• moment of a force, torque, angular momentum, conservation of angular momentum and its applications

• moment of inertia, radius of gyration.

• Values of moments of inertia for simple geometrical objects, parallel and perpendicular axes theorems and their applications.

• Rigid body rotation, equations of rotational motion.

UNIT VI: 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.

UNIT VII: Properties of Solids and Liquids

• Elastic behaviour, Stress-strain relationship, Hooke’s Law, Young’s modulus, bulk modulus, modulus of rigidity.

• Pressure due to a fluid column

• Pascal’s law and its applications.

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

• Bernoulli’s principle and its applications.

• Surface energy and surface tension, angle of 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.

UNIT VIII: Thermodynamics

• Thermal equilibrium, zeroth law of thermodynamics, concept of temperature.

• Heat, work and internal energy.

• First law of thermodynamics.

• Second law of thermodynamics: reversible and irreversible processes.

• Carnot engine and its efficiency.

UNIT IX: Kinetic Theory of Gases

• Equation of state of a perfect gas, work doneon 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, applications to specific heat capacities of gases

• 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, 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

UNIT XI: Electrostatics

Electric charges:

• Conservation of charge,

• Coulomb’s law-forces between two point charges,

• forces between multiple charges;

• superposition principle

• continuous charge distribution.

Electric field:

• Electric field due to a point charge,

• Electric field 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

• uniformly charged thin spherical shell.

• Electric potential and its calculation for a point charge,

• electric dipole and system of charges

• Equipotential surfaces,

• Electrical potential energy of a system of two point charges in an electrostatic field.

• capacitor,

• combination of capacitors in series and in parallel,

• capacitance of a parallel plate capacitor with

• without dielectric medium between the plates,

• Energy stored in a capacitor.

UNIT XII: Current Electricity

• Electric current,

• Drift velocity,

• Ohm’s law,

• Electrical resistance,

• Resistances of different materials,

• V-I characteristics of Ohmic

• Non-ohmic conductors,

• Electrical energy and power,

• Electrical resistivity,

• Colour code for resistors

• Series and parallel combinations of resistors

• Temperature dependence of resistance.

• Electric 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.

UNIT XIII: Magnetic Effects of Current and Magnetism

• 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 equivalent solenoid, magnetic field lines

• Earth’s magnetic field and magnetic elements.

• Para-, dia- and ferro- magnetic substances.

• Magnetic susceptibility and permeability, Hysteresis, Electromagnets and permanent magnets.

UNIT XIV: Electromagnetic Induction and Alternating Currents

• Electromagnetic induction

• Faraday’s law, induced emf and current

• Lenz’s Law, Eddy currents.

• Self and mutual inductance.

• Alternating currents, peak and rms value of alternating current/ voltage

• reactance and impedance

• LCR series circuit, resonance

• Quality factor, power in AC circuits, wattless current.

• AC generator and transformer.

UNIT XV: 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.

UNIT XVI: 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 magnifying powers.

Wave optics:

• Wave front 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 maximum.

• Resolving power of microscopes and astronomical telescopes,

• Polarization, plane polarized light

• Brewster’s law, uses of plane polarized light and Polaroids.

UNIT XVII: Dual Nature of Matter and Radiation

• Dual nature of radiation.

• Photoelectric effect, Hertz and Lenard’s observation

• Einstein’s photoelectric equation

• particle nature of light.

• Matter waves-wave nature of particle

• de Broglie relation.

• Davisson-Germer experiment.

UNIT XVIII: Atoms and Nuclei

• Alpha-particle scattering experiment

• Rutherford’s model of atom

• Bohr model, energy levels, hydrogen spectrum.

• Composition and size of nucleus, atomic masses, isotopes, isobars

• isotones.

• Radioactivity-alpha, beta and gamma particles/rays and their properties

• radioactive decay law

• Mass-energy relation, mass defect

• binding energy per nucleon and its variation with mass number

• nuclear fission and fusion.

UNIT XIX: Electronic Devices

• Semiconductors

• Semiconductor diode: I-V characteristics in forward and reverse bias

• diode as a rectifier

• I-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 XX: Communication Systems

• Propagation of electromagnetic waves in the atmosphere

• Sky and space wave propagation

• Need for modulation,

• Amplitude and Frequency Modulation,

• Bandwidth of signals

• Bandwidth of Transmission medium

• Basic Elements of a Communication System (Block Diagram only)

## JEE Mains Physics Syllabus-Section B

UNIT XXI: Experimental Skills

• Vernier callipers – its use to measure internal and external diameter and depth of a vessel.

• Screw gauge-its use to determine thickness/diameter of thin sheet/wire.

• Simple Pendulum-dissipation of energy by plotting a graph between square of amplitude and time.

• Metre Scale – mass of a given object by principle of moments.

• Young’s modulus of elasticity of the material of a metallic wire.

• Surface tension of water by capillary rise and effect of detergents.

• Co-efficient of Viscosity of a given viscous liquid by measuring terminal velocity of a given spherical body.

• Plotting a cooling curve for the relationship between the temperature of a hot body and time.

• Speed of sound in air at room temperature using a resonance tube.

• Specific heat capacity of a given

(i) solid

(ii)liquid by method of mixtures.

• Resistivity of the material of a given wire using metre bridge.

• Resistance of a given wire using Ohm’s law.

• Potentiometer –

(i) Comparison of emf of two primary cells.

(ii)Determination of internal resistance of a cell.

• Resistance and figure of merit of a galvanometer by half deflection method.

• Focal length of:

(i) Convex mirror

(ii)Concave mirror,

(iii)Convex lens using parallax method.

• Plot of angle of deviation vs angle of incidence for a triangular prism.

• Refractive index of a glass slab using a travelling microscope.

• Characteristic curves of a p-n junction diode in forward and reverse bias.

• Characteristic curves of a Zener diode and finding reverse break down voltage.

• Characteristic curves of a transistor and finding current gain and voltage gain.

• Identification of Diode, LED, Transistor, IC, Resistor, Capacitor from mixed collection of such items.

• Using multimeter to:

(i) Identify base of a transistor

(ii)Distinguish between npn and pnp type transistor

(iii)See the unidirectional flow of current in case of a diode and an LED.

(iv)Check the correctness or otherwise of a given electronic component (diode, transistor or IC).

Related links:

JEE Mains Syllabus 2018

JEE Mains Maths Syllabus 2018

JEE Mains Chemistry Syllabus 2018

JEE Mains Paper 2 Syllabus 2018