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## JEE Main Physics Syllabus (Updated): Important Topics, Weightage, Paper Analysis

Last updated on December 22nd, 2020 at 05:05 pm

NTA, which is now the conducting authority for JEE Main, will release the JEE Main Physics Syllabus 2021. This year it might make some changes in the **exam pattern** of the examination. However, it is also likely that there will be changes in JEE Main Syllabus 2010 or JEE Main Physics Syllabus due to the reduction in Class XII syllabus by some boards.

- JEE Main 2021 will be a Computer-Based Mode (CBT) exam.
- Students can practice
**JEE Main Mock Tests**for a better understanding of CBT. - Since last year, JEE Main Physics section will hold 20 objective type questions and 5 numerical value questions. These 5 numerical questions won’t have any negative marking.
- Meanwhile,
**JEE Advanced Syllabus 2020**also had few additional topics which required higher-level understanding.

**Latest Update:**

- Updated JEE Main Syllabus 2021 will be released by NTA soon.
- Till then, students can have a look at JEE Main Physics Syllabus 2020 and start their preparation accordingly.

**JEE Main 2021 Physics Syllabus Highlights**

The **JEE Main Syllabus** is pretty vast and it usually takes at least 2 years to master everything.

- Also, NTA JEE Main Physics Syllabus 2021 is considerably similar to the CBSE Curriculum.
- So, the syllabus contains two sections – A and B.
- Section A pertains to the
**Theory Part**which holds 80% of the total weightage. - Meanwhile, Section B contains
**Practical Part**(Physics Experimental Skills) with 20% weightage.

- Section A pertains to the

Read the following article to know more about JEE Main Physics Syllabus. You can also save this article by using Print Option (Ctrl + P) and save the NTA JEE Main Physics Syllabus PDF in case you need it in future.

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## JEE Main Physics Syllabus 2021: Theory (Section A)

There are a lot of **important topics in JEE Main** Physics. The JEE Main Physics Kinematics has a good weightage in the exam. Students can also refer to the **past paper analysis of JEE Main** to understand more deeply about the weightage of various chapters. The following table depicts the JEE Main Physics Syllabus 2020 (Theory Part)-

S.No. |
Unit |
Topics |

1 | 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, | ||

Dimensions of Physical quantities, dimensional analysis and its applications | ||

2 | 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 | ||

3 | Laws of Motion | Force and Inertia, |

Newton’s First Law of motion: Momentum, Newton’s Second Law of motion: Impulse and 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, | ||

4 | 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 nonconservative forces; | ||

Elastic and inelastic collisions in one and two dimensions. | ||

5 | 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 | ||

6 | 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. Geostationary satellites. | ||

7 | 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 | ||

8 | Thermodynamics | Thermal equilibrium, zeroth law of thermodynamics, concept of temperature |

Heat, work and internal energy | ||

First law of thermodynamics | ||

The second law of thermodynamics: reversible and irreversible processes | ||

Carnot engine and its efficiency | ||

9 | Kinetic Theory of Gases | 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: 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 | ||

10 | 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 | ||

11 | 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 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 | ||

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 flux, | ||

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. | ||

Conductors and insulators, Dielectrics and electric polarization, capacitor, 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. | ||

12 | Current Electricity | Electric current, Drift velocity, Ohm’s law, Electrical resistance, Resistances of different materials, V-I characteristics of Ohmic and 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. | ||

13 | 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. | ||

14 | 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. | ||

15 | Electromagnetic Waves | Electromagnetic waves and their characteristics. |

Transverse nature of electromagnetic waves. | ||

Electromagnetic spectrum(radio waves, microwaves, infrared, visible, ultraviolet, X rays, gamma rays). | ||

Applications of e.m. waves. | ||

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 magnifying powers. | ||

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 maximum. Resolving power of microscopes and astronomical telescopes, Polarisation, plane polarized light | ||

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

17 | Dual Nature of Matter and Radiation | Dual nature of radiation |

Photoelectric effect, Hertz and Lenard’s observations | ||

Einstein’s photoelectric equation | ||

Particle nature of light | ||

Matter waves-wave nature of the particle, de Broglie relation. | ||

Davis son-Germer experiment. | ||

18 | Atoms and Nuclei | Alpha-particle scattering experiment |

Rutherford’s model of the atom | ||

Bohr model, energy levels, hydrogen spectrum | ||

Composition and size of the nucleus, atomic masses, isotopes, isobars, and 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. | ||

19 | Electronic Devices | Semiconductors |

Semiconductor diode: I-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 | ||

20 | 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). |

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**JEE Main Physics Experimental Skills (Section B)**

The following table depicts the **JEE Main Physics Syllabus 2020** – Experimental Skills. The changes will be updated in this table as soon as JEE Main Physics Syllabus 2021 is released by NTA.

**Unit 1 to 10**

S.No. |
Experiments |

1 | Vernier callipers-its use to measure internal and external diameter and depth of a vessel. |

2 | Screw 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 time. |

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 of detergents. |

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

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

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

10 | Specific heat capacity of a given (i) solid and (ii) liquid by method of mixtures. |

**Read**

**Unit 11 to 22**

S.No. |
Experiments |

11 | Resistivity of the material of a given wire using metre bridge. |

12 | Resistance of a given wire using Ohm’s law. |

13 | Potentiometer
-Comparison of emf of two primary cells. -Determination of internal resistance of a cell. |

14 | Resistance and figure of merit of a galvanometer by half deflection method |

15 | Focal length of-Convex mirror
-Concave mirror, and -Convex lens using parallax method |

16 | Plot of angle of deviation vs angle of incidence for a triangular prism. |

17 | Refractive index of a glass slab using a traveling microscope. |

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

19 | Zener diode characteristic curves and finding reverse breakdown voltage. |

20 | Characteristic curves of a transistor and finding current gain and voltage gain. |

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

22 | Using multimeter to-Identify base of a transistor
-Distinguish between npn and pnp type transistor -See the unidirectional flow of current in case of a diode and an LED. -Check the correctness or otherwise of a given electronic component (diode, transistor or IC). |

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## Latest News Updates

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**Books For Preparing JEE Main Physics Syllabus 2021**

A lot of important topics in JEE Main Physics Syllabus 2021 are not easy to apprehend. If students do not have the best books explaining important topics, a lot of logic behind certain things is left out. To under topics with ease and to know the logic behind certain formulae, major experts suggest the **best books** given below-

Books |
Author |

Concepts of Physics Volume 1 and Volume 2 | H.C. Verma |

Feynman Lectures on Physics | Feynman, Leighton and Sands |

Problems in General Physics | IE Irodov |

Objective Questions on Physics- Chapterwise Solved Papers | D.C. Pandey |

Fundamentals of Physics | Halliday, Resnick and Walker |

Problems in Physics | AA Pinsky |

Advance Physics | Nelkon and Parker |

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**JEE Main 2021 Paper Attempting Tips**

Preparation is the prime way to crack competitive exams like JEE Main. But we should keep in mind that mere preparation is not enough. Knowing how to attempt the JEE Main paper is equally important. Below given are some general paper attempting tips that will help you to score good marks in the examination.

**Section Attempting Order:**- According to experts and past trend analysis idle paper attempting order should be in the following manner- first Chemistry, then Maths and Physics last.
- The logic behind this is that Chemistry has more fact-based questions and the level of logical questions rises from Chemistry to Maths to Physics.
- It is easier to solve fact-based questions than solving questions with calculations.
- This way students can secure some marks before moving forward to the tougher parts.
- However, the students’ command in each subject also plays an important role here.

**Segregation of Questions:**- Segregation of questions in terms of their difficulty level is important.
- On average in JEE Main paper 30 easy questions are expected.
- This clearly means that 120 marks can be secured easily.
- Securing these 120 marks will help students to get themselves ranked among 2,00,000 candidates.

**Elimination:**- The trend analysis shows that (20-25%) of questions in the Mathematics section can be solved using substitution and elimination methods.
- This means that the students need to substitute the answer from the multiple choices in the question and then eliminate the wrong answers.
- Also, this method saves time and gives the correct answer almost every time.
- In some other questions also, the answers can be eliminated by using logic.

**Solving Previous Year Papers:**- This tip is very much effective; solving previous year papers and analyzing results.
- It will also help you to locate your stronger and weaker topics.
- Knowing your strength will help to understand which questions you should attempt first and secure some marks.

**Accuracy:**- It is always preferable to attempt questions of the topics you have great command rather than focusing on weaker areas.
- This way you will save your time and energy.
- Also, there is a higher chance of scoring good marks if there is a minimum negative marking.

**Don’t Over Attempt:**- Students need to keep in mind that the number of correct answers has more weightage than the number of attempted questions.
- Also, you must attempt only those questions which you are confident about.
- Solving extra questions only increases the chances of negative marking.
- Skipping the questions which seem too difficult will be a smart move to save time and candidates to dedicate more time to solve easier questions.

**Time management:**- After attempting the exam it is important to revise the attempted questions in order to locate possible errors.
- So, good time management will help you to save 15 min out of 3 hours to facilitate revision.

**Read**

**Some Numerical Value Type Questions in JEE Main Physics**

Given below are some numerical value questions which have been provided in the official sample questions of JEE Main Physics. These were introduced for the first time in the JEE Main Physics section in 2020.

**Q1.** A particle moves in the x-y plane under the influence of a force such that the linear momentum is P(t) = A [ î cos kt – ĵ sin kt ] Where A and k are constants. The angle in degrees between force and momentum is_________.

**Ans. **90

**Q2.** A power line lies along the east-west direction and carries a current of 10 A. The force per meter due to the earth’s magnetic field of 10-4 T is 10-X N/m. The value of x is_____________.

**Ans.** 3

**Q3.** Light of wavelength 0.6 mm from a sodium lamp falls on a photocell and causes the emission of photoelectrons for which the stopping potential is 0.5 V. With the light of wavelength 0.4 mm from a mercury lamp the stopping potential is 1.5 V. Then, the work function in eV of the photocell surface is____________.

**Ans.** 1.5

These questions above are just samples taken from the official sample questions provided by NTA. You can also go through **previous years’ question papers** to understand the JEE Main exam pattern.

**Check**

Aspirants can also download the **PDF of sample questions **on numerical value for JEE Main Physics. As you have reviewed the whole syllabus of JEE Main Physics, you must have understood the topics which are highly important for the exam. JEE Main Physics Kinematics, Optics, Electrostatics are the top-scoring chapters for this section. Make sure to give these topics enough time. All the best!

**JEE Main Physics FAQs**

Ans: Yes, the JEE Main Physics syllabus 2021 contains topics from class 11th and 12th as well.

Ans: JEE Main Physics syllabus has two sections- weightage of Section B is 20% whereas Section-A consisting of theory having 80% weightage.

Ans. No, NTA has not released the official JEE Main Physics Syllabus yet. However, itt will be released soon and will be updated here.

Ans. Most preferred books – Problems in Physics by AA Pinsky, advanced Physics by Nelkon and Parker, Concepts of Physics Volume 1 and Volume 2 by H.C. Verma and yes don’t forget NCERT books.