JEE Physics question wise weightage
JEE Physics question weightage
A key component of successful JEE preparation is understanding the JEE Physics question weightage & Topics wise weightage. It helps you to allocate time in a way that will help balance your preparation so you can maximize your scores in every topic.
JEE Main 2021 is one of India's most significant exams which is an entryway to prestigious establishments of India to get admissions to NITs, IIITs, for various courses.
Here we will examine the question weightage of Physics in JEE Main 2021
JEE Physics Syllabus for JEE Main 2021
The JEE Main Physics schedule incorporates two segments A and B. Area An incorporates Theory part with 80% weightage and segment B contains practical segment (experience aptitudes) with 20% weightage.
Look at the full schedule JEE Main January 2021 Paper 1 Syllabus for Physics given below.
Unit |
Question Includes ( Topics) |
Physics & Measurement |
Physics, Technology or society, Fundamental and derived unit Least count, accuracy and precision of measuring instruments,S I unit, Dimensions of Physical quantities, Errors in measurement, Dimensional Analysis and its application |
Kinematics |
Frame of reference Motion in a straight line: Position Time Graph, speed and velocity Uniform and Non-Uniform Motion, Unit Vector average speed and instantaneous velocity Uniformly accelerated motion, Uniform Circular Motion, Velocity Time, position-time graphs, relations for uniformly accelerated motion. Scalars and Vectors, Vector addition or Subtraction, Zero Vector, Scalar & Vector products, Resolution of a Vector Relative Velocity, Motion in a plane, Projectile Motion. |
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. |
|
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. |
|
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. |
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. |
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. |
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. |
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. |
Oscillations & 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 |
|
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. -Electric flux, Gauss’s law and its applications to find fields 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, 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. |
|
Chapter-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. |
Magnetic Effects Of Current And Magnetism |
Biot – Savart law and its application to current carrying circular loops. 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 |
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. |
Electromagnetic Waves |
Electromagnetic waves and their characteristics. Transverse nature of electromagnetic waves. Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet, X Rays or gamma rays). Applications of e.m. waves. |
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 and Laws of reflection and refraction using Huygens principle. Interference, Young’s double slit experiment and expression for fringe width. 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. |
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 particles, de Broglie relation. Davisson-Germer experiment. |
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 and isotones. Radioactivity-alpha, beta and gamma particles/rays and their properties; radioactive decay law. Mass-energy relation, mass defect; binding energy per nucleon or its variation with mass number, nuclear fission and fusion. |
Electronic Devices |
Semiconductors; semiconductor diode: I-V characteristics in forward and reverse bias; Diode as a rectifier, 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) or oscillator. Logic gates (OR, AND, NOT, NAND & NOR). Transistor as a switch |
Communication Systems |
Propagation of electromagnetic waves in the atmosphere : Sky and space wave propagation, Amplitude and Frequency Modulation, Bandwidth of signals, Bandwidth of Transmission medium, Basic Elements of a Communication System (Block Diagram only) Need for modulation, |
JEE Physics Question Weightage (Topicwise)
The following is the previous years of JEE Main physic syllabus, number of question asked and marks distribution in the test
Topics |
No. of Question |
Marks |
Weightage |
Electrostatics |
1 |
4 |
3.33% |
Current Electricity |
3 |
12 |
10.00% |
Capacitor |
1 |
4 |
3.33% |
Magnetic Effect of Current & Magnetism |
2 |
8 |
6.67% |
Alternating Current |
2 |
8 |
6.67% |
KTG & Thermodynamics |
2 |
8 |
6.67% |
SHM |
1 |
4 |
3.33% |
Sound Waves |
1 |
4 |
3.33% |
KInematics |
1 |
4 |
3.33% |
Laws of motion |
1 |
4 |
3.33% |
Work,Power and Energy |
1 |
4 |
6.67% |
Centre Of Mass |
2 |
8 |
6.67% |
Rotational Dynamics |
2 |
8 |
6.67% |
Modern Physics |
2 |
8 |
6.67% |
NLM |
1 |
4 |
3.33% |
Elasticity |
1 |
4 |
3.33% |
Wave Optics |
2 |
8 |
6.67% |
Error |
1 |
4 |
3.33% |
Circular Motion |
1 |
4 |
3.33% |
Electromagnetic Waves |
1 |
4 |
3.33% |
Semiconductors |
1 |
4 |
3.33% |
Communication System |
1 |
4 |
3.33% |
Total |
30 |
120 |
100% |
Easy Physics Topics in JEE Main
Electrostatics is very lengthy but it is an easy topic. Mostly 3 to 4 questions are asked from this subject each year.
Current Electricity could be a small topic however it is very scoring. Questions from the subject like colour code of resistors, Ohm’s Law, etc. are commonly asked within the JEE Main examination.
Electromagnetic Induction and electrical energy is an additional easy topic and is a crucial topic for JEE Main. One to 2 questions are asked from these two topics every year.
Semiconductor & Electronic Devices, Communication, Units & Dimensions, Measurement of error (Absolute and Relative), Instruments. These are very small and scoring topics. One question is sometimes asked from each of those topics in JEE Main. So, you ought to not skip these as they will easily score 16-20 marks.
Difficult Topics as per Expert
The topics given below are important topics of JEE Main 2021 in Physics, however, need dedicated focus and more practice.
Mechanics is the foremost vital topic for JEE Main. Most of the queries asked in JEE Main demand abstract understanding of the chapters of Mechanics. a number of the vital topics in mechanics for JEE Main are:
1. Newton’s Law of Motion
2. Bernoulli’s theorem
3. Elasticity
4. Equation of Continuity
5. Kinematics
6. Fluid Mechanics
7. Work, Energy and Power
8. Rigid Body Dynamics
9. Gravitation
10. Law of conservation of momentum (linear/angular)
Magnetism could be a vital topic for JEE Main. Usually, a decent variety of queries are asked from this subject in JEE Main.
Optics is additionally a really necessary topic for JEE Main. you ought to be thorough during this topic.
Modern Physics Is the foremost necessary topic for JEE Main in Physics. This chapter generally features queries of 12-16 marks in JEE Main. most often asked topics area unit as below:
1. X-ray (Continuous wavelength, Characteristic Wavelength)
2. Atomic Structure (Spectrum/Radius)
3. Radioactivity
4. Dual Nature of Matter
5. Photoelectric Effect
6. Nuclear fission
You must study the Oscillation and Waves topic very well. queries associated with topics like SHM, sound waves, string, propagation, Wave Optics are sure enough asked in JEE Main annually.
1-2 queries are asked once a year from physics, thus you ought to be thorough with it also.
Best Book For JEE Main Physics
This book helps you to gain more marks in JEE Main exam. It is very important to read these books to clear JEE Main exam.
If you read the book then you can pass with very good numbers and clear your exam
S. No |
Books |
Authors |
1. |
Concept of Physics JEE |
H.C Verma |
2. |
Fundamental Physics |
Halliday Resnick & Walker |
3. |
IIT Physics 35 year chapter wise solved paper |
D.C Pandey |
4. |
Problems in Physics |
A.A Pinsky |
5. |
A collection of ques & problem in physics |
L.A Sena |
6. |
Advance level Physics |
Nelkon, Michael, Parker, Philip |
7. |
Physics Vol - l & ll |
Paul. A Tipler |
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JEE Physics | JEE Chemistry | JEE Mathematics |
---|---|---|
Mathematics In Physics | Atom & Molecules | Relations |
Unit, Dimension & Measurement | Atomic Structure | Sets Theory |
Motion In One Dimension | Chemical Bonding | Continuity |