Candidates appearing in the **JEE Main 2020 exam** are suggested to go through the ** JEE Main 2020 syllabus.** The Joint Entrance Examination Main is conducted in two papers – Paper I and Paper II. Paper I comprises three subjects such as Physics, Chemistry and Mathematics. In this article, we have covered

**JEE Main Syllabus 2020**in detail. The candidates can visit the official website to download the syllabus PDF.

The ** JEE Main syllabus 2020** covers the topics of Class XI and XII. Read through the article to find complete section-wise break up of chapters, units and topics.

**JEE Main Chemistry Syllabus 2020**

**JEE Main Chemistry Section A Syllabus 2020 – Physical Chemistry**

**Unit 1: Some Basic Concepts in Chemistry**

Concept of molecule, atom, compound and element; Dalton’s atomic theory, matter and its nature; Laws of chemical combination: Atomic and molecular masses, molar mass, mole concept, empirical, percentage composition and molecular formulae; Chemical equations and stoichiometry; Physical quantities and measurements in Chemistry, significant figures, precision and accuracy, S.I. Units, dimensional analysis.

**Unit 2: States of Matter**

Classification of matter into liquid, solid and gaseous states.

**Liquid State:**

Properties of liquids – viscosity, surface tension and vapour pressure and effect of temperature on them (qualitative treatment only).

**Gaseous State:**

Measurable properties of gases; Gas laws – Charle’s law, Boyle’s law, Avogadro’s law, Graham’s law of diffusion, Dalton’s law of partial pressure; Ideal gas equation; Concept of Absolute scale of temperature; Root mean square, concept of average and most probable velocities; Kinetic theory of gases (only postulates); Real gases, compressibility factor, deviation from Ideal behaviour and van der Waals equation.

**Solid State:**

Bragg’s Law and its applications; Classification of solids: molecular, ionic, covalent and metallic solids, amorphous and crystalline solids (elementary idea); Electrical and magnetic properties; Imperfection in solids, unit cell and lattices, voids, packing in solids (bec, fee and hep lattices), calculations involving unit cell parameters.

**Unit 3: Atomic Structure**

Nature of electromagnetic radiation, photoelectric effect; Thomson and Rutherford atomic models and their limitations; Dual nature of matter, de-Broglie’s relationship, Heisenberg uncertainty principle; Spectrum of hydrogen atom, Bohr model of hydrogen atom – derivation of the relations for energy of the electron, its postulates and limitations of Bohr’s model, radii of the different orbits. Variation of t|/ and \|/2 with r for Is and 2s orbitals; Concept of atomic orbitals as one electron wave functions; shapes of s, p and d – orbitals, spin quantum number and electron spin; various quantum numbers (angular momentum, magnetic quantum numbers and principal) and their significance; Pauli’s exclusion principle and Hund’s rule, Rules for filling electrons in orbitals – aufbau principle, extra stability of half-filled, electronic configuration of elements and completely filled orbitals. Quantum mechanical model of atom, elementary ideas of quantum mechanics and its important features.

**Unit 4: Chemical Bonding and Molecular Structure**

Kossel – Lewis approach to chemical bond formation, covalent bonds and concept of ionic.

**Quantum mechanical approach to covalent bonding**: Valence bond theory – concept of hybridization involving s, p and d orbitals, its important features; Resonance.

**Covalent Bonding**: Fajan’s rule, dipole moment, concept of electronegativity; Valence Shell Electron Pair Repulsion (VSEPR) theory and shapes of simple molecules.

**Ionic Bonding**: Calculation of lattice enthalpy; Factors affecting the formation of ionic bonds, formation of ionic bonds,.

**Molecular Orbital Theory** – LCAOs, its important features, sigma and pi-bonds, types of molecular orbitals (bonding, antibonding), concept of bond order, molecular orbital electronic configurations of homonuclear diatomic molecules, bond energy and bond length.

Hydrogen bonding and its applications. Elementary idea of metallic bonding.

**Unit 5: Chemical Thermodynamics**

Fundamentals of thermodynamics: Extensive and intensive properties, system and surroundings, types of processes, state functions.

**First law of thermodynamics** – Hess’s law of constant heat summation; Concept of work, heat capacity, molar heat capacity, heat internal energy and enthalpy; Enthalpies of bond dissociation, formation, combustion, sublimation, atomization, hydration, phase transition, solution and ionization.

**Second law of thermodynamics**: AS of the universe and AG of the system as criteria for spontaneity, AG” (Standard Gibbs energy change), Spontaneity of processes and equilibrium constant.

**Unit 6: Solutions**

Different methods for expressing concentration of solution – molarity, vapour pressure of solutions, molality, percentage (by volume and mass both), mole fraction and Raoult’s Law – Non-ideal and ideal solutions, vapour pressure – composition, plots for non-ideal and ideal solutions; Colligative properties of dilute solutions – elevation of boiling point, relative lowering of vapour pressure, depression of freezing point and osmotic pressure; Abnormal value of molar mass, van’t Hoff factor and its significance; Determination of molecular mass using colligative properties.

**Unit 7: Equilibrium**

Concept of dynamic equilibrium, meaning of equilibrium.

**Ionic equilibrium**: Various concepts of acids and bases (Bronsted – Lowry, Arrhenius and Lewis), weak and strong electrolytes, ionization of electrolytes and their ionization, ionization constants, and acid – base equilibria (including multistage ionization) ionization of water, pH scale, hydrolysis of salts, common ion effect, solubility of sparingly soluble salts and pH of their solutions, solubility products and buffer solutions.

**Equilibria involving chemical processes**: Le Chatelier’s principle, significance of AG and AG” in chemical equilibria, equilibrium constants (Kp and Kc), law of chemical equilibrium and their significance, temperature, factors affecting equilibrium concentration, pressure, effect of catalyst.

** **

**Equilibria involving physical processes**: Solid – gas equilibria, liquid – gas and Solid – liquid, general characteristics of equilibrium involving physical processes, Henry’s law.

**Unit 8: Redox Reactions and Electro-chemistry**

Redox reactions, rules for assigning oxidation number, electronic concepts of oxidation and reduction, balancing of redox reactions, oxidation number.

Electrochemical cells – different types of electrodes, Electrolytic and Galvanic cells, half – cell and cell reactions, electrode potentials including standard electrode potential and emf of a Galvanic cell its measurement; Dry cell and lead accumulator; Relationship between cell potential and Gibbs’ energy change; Nernst equation and its applications; Fuel cells.

Conductance in electrolytic solutions, electrolytic and metallic conduction and their variation with concentration, molar conductivities: Kohlrausch’s law and its applications.

**Unit 9: Chemical Kinetics**

Factors affecting the rate of reactions: concentration, rte of a chemical reaction, pressure, temperature and catalyst; complex and elementary reactions, rate law, order and molecularity of reactions, differential and integral forms of zero and first order reactions, rate constant and its units, effect of temperature on rate of reactions -Arrhenius theory, their characteristics and half -lives, collision theory of bimolecular gaseous reactions (no derivation), activation energy and its calculation.

**Unit 10: Surface Chemistry**

**Catalysis –** Homogeneous and heterogeneous, enzyme catalysis, activity and selectivity of solid catalysts and its mechanism.

**Adsorption **– Chemisorption and Physisorption and their characteristics, adsorption from solutions, factors affecting adsorption of gases on solids – Langmuir and Freundlich adsorption isotherms.

**Colloidal state**– Classification of colloids -lyophilic, colloids and suspensions, lyophobic; multimolecular, preparation and properties of colloids – Tyndall effect, macromolecular and associated colloids (micelles), distinction among true solutions, electrophoresis, dialysis, Emulsions and their characteristics coagulation and flocculation; Brownian movement.

**JEE Main Chemistry Section B Syllabus 2020 – Inorganic Chemistry**

**Unit 11: Classification of Elements and Periodicity in Properties**

Modem periodic law and periodic trends in properties of elements atomic and ionic radii, present form of the periodic table, s, p, d and f block elements, electron gain enthalpy, ionization enthalpy, oxidation states, valence and chemical reactivity.

**Unit 12: General Principles and Processes of Isolation of Metals**

Modes of occurrence of elements in nature, ores, minerals; Steps involved in the extraction of metals – reduction (electrolytic and chemical methods), concentration and refining with special reference to the extraction of Cu, Al, Fe and Zn; electrochemical and Thermodynamic principles involved in the extraction of metals.

**Unit 13: Hydrogen**

Position of hydrogen in periodic table, preparation, isotopes, uses of hydrogen and properties; Physical and chemical properties of heavy water and water; Structure, reactions, uses of hydrogen peroxide and preparation; Hydrogen as a fuel; Classification of hydrides – covalent, ionic and interstitial.

**Unit 14: S – Block Elements (Alkali and Alkaline Earth Metals)**

Group -1 and 2 Elements

Electronic configuration, general introduction and general trends in chemical and physical properties of elements, diagonal relationships, anomalous properties of the first element of each group.

Preparation and properties of some compounds – sodium hydroxide and sodium carbonate and sodium hydrogen carbonate; Biological significance of Na, K, Mg and Ca; Plaster of Paris, Industrial uses of limestone, cement and lime.

**Unit 15: P- Block Elements**

**Group -13 to Group 18 Elements**

**General Introduction**: General trends in chemical and physical properties and Electronic configuration of elements down the groups and across the periods; unique behaviour of the first element in each group.

**Group-wise study of the p – block elements Group -13**

Properties, preparation and uses of aluminium and boron; Structure, properties and boric acid, uses of borax, boron trifluoride, diborane, alums and aluminium chloride.

**Group -14**

Properties, Structure and uses of Allotropes and oxides of silicon tetrachloride, carbon, zeolites, silicates and silicones; Tendency for catenation.

**Group -15**

Properties and uses of phosphorus and nitrogen; Preparation, properties, structure and uses of ammonia, nitric acid, phosphorus halides and phosphine, (PC13, PCI,); Allotrophic forms of phosphorus; Structures of oxoacids of nitrogen and oxides and phosphorus.

**Group -16**

Structures, properties, uses of ozone and Preparation; Structures of oxoacids of sulphur; properties, Preparation, uses of sulphuric acid (including its industrial preparation) and structures; Allotropic forms of sulphur.

**Group -17**

Uses of hydrochloric acid, Preparation and properties; Structures of Interhalogen compounds and oxides and oxoacids of halogens; Trends in the acidic nature of hydrogen halides.

**Group-18**

Structures of oxides of xenon and fluorides; Occurrence and uses of noble gases.

**Unit 16: d – and f – Block Elements**

**Transition Elements**

General trends in properties of the first row transition elements – ionization enthalpy, physical properties, atomic radii, oxidation states, catalytic behaviour, colour, complex formation, magnetic properties, alloy formation, interstitial compounds, General introduction, occurrence and characteristics, electronic configuration; Properties, Preparation, and uses of 07, K2 Cr and Kmn04.

**Inner Transition Elements**

**Actinoids** – Oxidation states and Electronic configuration.

** **

**Lanthanoids –** Electronic configuration, lanthanoid contraction and oxidation states.

**Unit 17: Co-Ordination Compounds**

Werner’s theory, Introduction to co-ordination compounds; Bonding-Valence bond approach and basic ideas of Crystal field theory, magnetic properties and colour; co-ordination number, ligands, chelation, denticity; IUPAC nomenclature of mononuclear coordination compounds, isomerism; Importance of coordination compounds (in extraction of metals, qualitative analysis and in biological systems).

**Unit 18: Environmental Chemistry**

**Soil pollution** – Major pollutants such as: Pesticides (herbicides, fungicides and insecticides), their harmful effects and prevention.

**Tropospheric pollutants** – Gaseous pollutants: nitrogen, Oxides of carbon and sulphur, hydrocarbons; their harmful effects, sources and prevention; Global warming and Greenhouse effect; Acid rain

**Atmospheric pollution** – Stratospheric and Tropospheric

**Environmental pollution** – water, Atmospheric and soil.

**Particulate pollutants**: Smoke, smog, dust, mist, fumes; harmful effects, their sources and prevention.

**Water Pollution** – Major pollutants such as, organic wastes, pathogens and chemical pollutants; their harmful effects and prevention.

**Stratospheric pollution-** Depletion of ozone layer, Formation and breakdown of ozone – its effects and mechanism.

Strategies to control environmental pollution

**JEE Main Chemistry Section C Syllabus 2020 – Organic Chemistry**

**Unit 19: Purification and Characterization of Organic Compounds**

**Qualitative analysis** – Detection of nitrogen, halogens, phosphorus and sulphur.

**Quantitative analysis (basic principles only)** – Estimation of nitrogen, phosphorus, halogens, sulphur, hydrogen, carbon.

**Purification** – Crystallization, distillation, sublimation, chromatography – principles and their applications and differential extraction.

Calculations of molecular formulae and empirical formulae; Numerical problems in organic quantitative analysis.

**Unit 20: Some Basic Principles of Organic Chemistry**

Tetravalency of carbon; Shapes of simple molecules -hybridization (s and p); Classification of organic compounds based on functional groups: and those containing halogens, oxygen, nitrogen and sulphur; Homologous series; Isomerism – structural and stereoisomerism.

**Nomenclature (Trivial and IUPAC)**

Covalent bond fission – Homolytic and heterolytic: free radicals, carbocations and carbanions; stability of carbocations and free radicals, electrophiles and nucleophiles.

**Electronic displacement in a covalent bond**

– Inductive effect, electromeric effect, resonance and hyperconjugation.

Common types of organic reactions- Substitution, addition, elimination and rearrangement.

**Unit 21: Hydrocarbons**

Classification, isomerism, IUPAC nomenclature, general methods of preparation, properties and reactions.

**Alkanes –** Conformations: Sawhorse and Newman projections (of ethane); Mechanism of halogenation of alkanes.

**Alkenes –** Geometrical isomerism; Mechanism of electrophilic addition: addition of hydrogen, halogens, water, hydrogen halides (Markownikoff s and peroxide effect); Ozonolysis and polymerization.

**Alkynes –** Acidic character; Addition of hydrogen, halogens, water and hydrogen halides; Polymerization.

**Aromatic hydrocarbons –** Nomenclature, benzene -structure and aromaticity; Mechanism of electrophilic substitution: halogenation, nitration, Friedel – Craft’s alkylation and acylation, directive influence of functional group in mono-substituted benzene.

**Unit 22: Organic Compounds Containing Halogens**

General methods of preparation, properties and reactions; Nature of C-X bond; Mechanisms of substitution reactions.

Uses; Environmental effects of chloroform, iodoform freons and DDT.

**Unit 23: Organic Compounds Containing Oxygen**

General methods of preparation, properties, reactions and uses.

**ALCOHOLS, PHENOLS AND ETHERS**

**Alcohols**: Identification of primary, secondary and tertiary alcohols; mechanism of dehydration.

**Phenols**: Acidic nature, electrophilic substitution reactions: halogenation, nitration and sulphonation, Reitner – Tiemann reaction.

**Ethers**: Structure.

**Aldehyde and Ketones**: Nature of carbonyl group;Nucleophilic addition to >C=0 group, relative reactivities of aldehydes and ketones; Important reactions such as – Nucleophilic addition reactions (addition of HCN, NH, and its derivatives), Griguard reagent; oxidation; reduction (Wolff Kishner and Clemmensen); acidity of a-hydrogen, aldol condensation, Cannizzaro reaction, Hatoform reaction;

Chemical tests to distinguish between aldehydes and Ketones.

**Carboxylic Acids**

Acidic strength and factors affecting it.

**Unit 24: Organic Compounds Containing Nitrogen**

General methods of preparation, properties, reactions and uses.

**Amines**: Nomenclature, classification, structure, basic character and identification of primary, secondary and tertiary amines and their basic character.

**Diazonium Salts**: Importance in synthetic organic chemistry.

**Unit 25: Polymers**

General introduction and classification of polymers, general methods of polymerization-addition and condensation, copolymerization;

Natural and synthetic rubber and vulcanization; some important polymers with emphasis on their monomers and uses – polythene, nylon, polyester and bakelite.

**Unit 26: Biomolecules**

General introduction and importance of biomolecules.

**Carbohydrates **– Classification: aldoses and ketoses; monosaccharides (glucose and fructose) and constituent monosaccharides of oligosaccharide (sucrose, lactose and maltose).

**Proteins** – Elementary Idea of a-amino acids, peptide bond, polypeptides; Proteins: primary, secondary, tertiary and quaternary structure (qualitative idea only), denaturation of proteins, enzymes.

**Vitamins** – Classification and functions.

**Nucleic Acids** – Chemical constitution of DN A and RNA.

Biological functions of nucleic acids.

**Unit 27: Chemistry In Everyday Life**

**Chemicals in medicines** – Analgesics, tranquilizers, antiseptics, disinfectants, antimicrobials, antifertility drugs, antibiotics, antacids, Antihistamine – their meaning and common examples.

**Chemicals in food** – Preservatives, artificial sweetening agents – common examples.

**Cleansing agents** – Soaps and detergents, cleansing action.

**Unit 28: Principles Related to Practical Chemistry**

- Detection of extra elements (N,S, halogens) in organic compounds; Detection of the following functional groups: hydroxyl (alcoholic and phenolic), carbonyl (aldehyde and ketone), carboxyl and amino groups in organic compounds.
- Chemistry involved in the preparation of the following:
- Inorganic compounds: Mohr’s salt, potash alum. Organic compounds: Aeetanilide, pnitroacetanilide, aniline yellow, iodoform.
- Chemistry involved in the titrimetric excercises -Acids bases and the use of indicators, oxalic-acid vs KMnO,, Mohr’s salt vs KMnO,.
- Chemical principles involved in the qualitative salt analysis:

Cations – Pb2+, Cu!+, Af,+, Fe1+, Zn2+, Ni2+, Ca2+, Ba2+,

Mg2+, nh;.

Anions- CO,”, S2~, SO4″, NO”, NO~2, Cf, Br”, I” . (Insoluble salts excluded).

- Chemical principles involved in the following experiments:

- Enthalpy of solution of CuS04
- Enthalpy of neutralization of strong acid and strong base.
- Preparation of lyophilic and lyophobic sols.
- Kinetic study of reaction of iodide ion with hydrogen peroxide at room temperature.

**Exam Pattern for JEE Main 2020 Chemistry Subject**

In total, there will be 75 questions from Paper I. All the questions are objective types. Candidates will have 25 (20 MCQs and 5 numerical value) questions alone from Chemistry. Remember, there will be negative marking for every wrong answer (1 mark would be deducted). For each correct answer, students will be given 4 marks.

**Best Recommended Books for JEE Main Chemistry 2020**

Some of the highly recommended books for Chemistry are –

- Organic Chemistry by Morrison Boyd
- Modern Approach to Chemical calculations by R.C. Mukherjee
- Concise Inorganic Chemistry: Fifth Edition by J.D. Lee
- Numerical Chemistry for JEE by P. Bahadur

The best part of the above-mentioned books is that they are explained in simple, lucid language and help student understand the concepts easily.

**JEE Main 2019 Mathematics Syllabus**

Mathematics is one of the three subjects of the** JEE Main Paper-I**. Regarded as the scoring subject, students must know the syllabus and get their concepts clear. The ** JEE Main Mathematics syllabus 2020** comprises units and topics of Class XI and XII. Students who have registered for the

**JEE Main 2020 exam**(scheduled to be conducted from 6

^{th}to 11th January 2020) are encouraged to get acquainted with the

**Math syllabus**before taking up the exam. Take a look at the below furnished chapter-wise

**Math syllabus**for the upcoming

**JEE Main exam**.

**JEE Main 2020 Mathematics Syllabus – Units and Topics**

**Unit 1: Sets, Relations and Functions**

Intersection, union and complement of sets and their algebraic properties; Sets and their representation; Types of relations, Relation, functions, equivalence relations; Power set; one-one, onto and into functions, composition of functions.

**Unit 2: Complex Numbers and Quadratic Equations**

Representation of complex numbers in the form a+ib and their representation in a plane, Complex numbers as ordered pairs of reals, Quadratic equations in complex and real number system and their solutions, Argand diagram, algebra of modulus, square root of a complex number, complex numbers and argument (or amplitude) of a complex number, triangle inequality. Nature of roots, relation between roots and co-efficients, formation of quadratic equations with given roots.

**Unit 3: Matrices and Determinants**

Evaluation of determinants, properties of determinants, area of triangles using determinants. Matrices, determinants, types of matrices, algebra of matrices and matrices of order two and three. Test of consistency and solution of simultaneous linear equations in two or three variables using matrices and determinants. Adjoint and evaluation of inverse of a square matrix using elementary transformations and determinants.

**Unit 4: Permutations And Combinations**

Fundamental principle of counting, combination as selection and permutation as an arrangement, Meaning of C (n,r) and P (n,r), simple applications.

**Unit 5: Mathematical Induction**

Principle of Mathematical Induction and its simple applications.

**Unit 6: Binomial Theorem and its Simple Applications**

Properties of Binomial coefficients and simple applications, Binomial theorem for general term, middle term and a positive integral index.

**Unit 7: Sequences and Series**

Arithmetico-Geometric progression. Relation between A.M. and G.M. Arithmetic and Geometric progressions, geometric means between two given numbers, insertion of arithmetic. Sum upto n terms of special series: S n, S n2, Sn3.

**Unit 8: Limit, Continuity and Differentiability**

Real – algebra of functions, inverse functions, rational, polynomials, logarithmic, trigonometric and exponential functions, valued functions. Limits, differentiability and continuity. Differentiation of the sum, product, quotient of two functions and difference. Graphs of simple functions. Applications of derivatives: monotonic – increasing and decreasing functions, Rate of change of quantities, Maxima and minima of functions of one variable, normals and tangents. Differentiation of inverse trigonometric, trigonometric, logarithmic, composite, exponential and implicit functions; derivatives of order upto two. Rolle’s and Lagrange’s Mean Value Theorems.

**Unit 9: Integral Calculus**

Fundamental integrals involving trigonometric, algebraic, logarithmic and exponential functions. Integral as an anti – derivative. Integration by parts, and by substitution by partial fractions. Integration using trigonometric identities.

Fundamental Theorem of Calculus. Integral as limit of a sum. Determining areas of the regions bounded by simple curves in standard form, Evaluation of definite integrals. Properties of definite integrals.

**Unit 10: Differential Equations**

Ordinary differential equations, their order and degree. Formation of differential equations. Solution of differential equations by the method of separation of variables, solution of homogeneous and linear differential equations.

**Unit 11: Co-ordinate Geometry**

Cartesian system of rectangular co-ordinates 10 in a plane, distance formula, section formula, locus and its equation, translation of axes, slope of a line, parallel and perpendicular lines, intercepts of a line on the coordinate axes.

**Straight lines**

Various forms of equations of a line, intersection of lines, angles between two lines, conditions for concurrence of three lines, distance of a point from a line, equations of internal and external bisectors of angles between two lines, coordinates of centroid, orthocentre and circumcentre of a triangle, equation of family of lines passing through the point of intersection of two lines.

**Circles, conic sections**

Standard form of equation of a circle, general form of the equation of a circle, its radius and centre, equation of a circle when the end points of a diameter are given, points of intersection of a line and a circle with the centre at the origin and condition for a line to be tangent to a circle, equation of the tangent. Sections of cones, equations of conic sections (parabola, ellipse and hyperbola) in standard forms, condition for y = mx + c to be a tangent and point (s) of tangency.

**Unit 12: Three Dimensional Geometry**

Coordinates of a point in space, distance between two points, section formula, direction ratios and direction cosines, angle between two intersecting lines. Skew lines, the shortest distance between them and its equation. Equations of a line and a plane in different forms, intersection of a line and a plane, coplanar lines.

**Unit 13: Vector Algebra**

Vectors and scalars, addition of vectors, components of a vector in two dimensions and three dimensional space, scalar and vector products, scalar and vector triple product.

**Unit 14: Statistics and Probability**

**Measures of Dispersion**: Calculation of mean, median, mode of grouped and ungrouped data calculation of standard deviation, variance and mean deviation for grouped and ungrouped data.

**Probability:** Probability of an event, addition and multiplication theorems of probability, Baye’s theorem, probability distribution of a random variate, Bernoulli trials and Binomial distribution.

**Unit 15: Trigonometry**

Trigonometrical identities and equations. Trigonometrical functions. Inverse trigonometrical functions and their properties. Heights and Distances

**Unit 16: Mathematical Reasoning**

Statements, logical operations and, or, implies, implied by, if and only if. Understanding of tautology, contradiction, converse and contrapositive.

**JEE Main 2020 Mathematics Exam Pattern**

The **Joint Entrance Examination (JEE) Main 2020** exam will be administered by the National Testing Agency. It will conduct the exam in two papers – Paper I and Paper II. Paper I will be conducted online, while Paper II, for B.Arch/ B.Plan admission, will be held in offline mode. In total, there will be 75 questions; 25 (20 MCQs and 5 numerical value questions) will come from Mathematics.

**JEE Main Physics syllabus 2020**

Candidates wishing to get into the best engineering colleges in the country must clear the **JEE Main Exam 20****20. **The exam will be conducted by National Testing Agency twice a year – January (First Attempt) and April (Second Attempt). The aspirants interested in appearing in the exam should go through the ** JEE Main syllabus 2020** as prescribed by NTA.

Physics is the most difficult subject and needs more attention than the other two subjects from Paper I (Mathematics and Chemistry). The ** JEE Main Physics syllabus 2020** contains two sections – Section A and Section B. Section A is comprised of the Theory Part that carries 80% weightage and Section B, which deals Practical Component (Experimental Skills), has 20% weightage. Below, we have furnished complete details about the

**.**

__JEE Main 2020 Physics syllabus__**JEE Main Physics Syllabus 2020 – Section A**

**Unit 1 – Physics and Measurement:** Physics, society and technology, Fundamental and derived units. SI units, Errors in measurement, Least count, accuracy and precision of measuring instruments, Dimensions of Physical quantities, its applications and dimensional analysis.

**Unit 2 – Kinematics:** Motion in a straight line: Position-time speed, graph and velocity. Frame of reference. Uniformly accelerated motion, velocity-time, position-time graphs, relations for uniformly accelerated motion. Vector addition and Subtraction, Scalars and Vectors, Scalar and Vector products, Resolution of a Vector, Unit Vector. Relative Velocity, Motion in a plane. Average speed and instantaneous velocity, uniform and non-uniform motion. Projectile Motion, Uniform Circular Motion.

**Unit 3 – Laws of Motion:**

- 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. Force and Inertia. Equilibrium of concurrent forces.
- Static and Kinetic friction, rolling friction, laws of friction.
- Dynamics of uniform circular motion: Centripetal force and its applications.

**Unit 4 – Work, Energy and Power:**

- Work done by a variable force and a constant force; work-energy theorem, kinetic and potential energies, power.
- Conservative and non-conservative forces, conservation of mechanical energy, potential energy of a spring; Inelastic and elastic collisions in one and two dimensions.

**Unit 5 – Rotational Motion:** Basic concepts of rotational motion; conservation of angular momentum and its applications, angular momentum, moment of a force, torque; Centre of mass of a rigid body, Centre of mass of a two-particle system; radius of gyration, moment of inertia. Parallel and perpendicular axes theorems and their applications, values of moments of inertia for simple geometrical objects. Equations of rotational motion, rigid body rotation.

**Unit 6 – Gravitation:** Kepler’s laws of planetary motion. Orbital velocity of a satellite. The universal law of gravitation. Escape velocity. Gravitational potential energy; gravitational potential. Geo-stationary satellites.

**Unit 7 – Properties of Solids and Liquids:**

- Surface energy and surface tension, application of surface tension, angle of contact – bubbles, drops and capillary rise. Hooke’s Law, Stress-strain relationship
- Young’s modulus, Elastic behaviour, modulus of rigidity, bulk modulus. Stokes’ law, streamline, terminal velocity and turbulent flow, Viscosity
- Reynolds number. Bernoulli’s principle and its applications. Heat, thermal expansion, temperature; calorimetry, specific heat capacity; latent heat, change of state.
- Pressure due to a fluid column; Pascal’s law and its applications. Convection, heat transfer-conduction and radiation, Newton’s law of cooling.

**Unit 8 – Thermodynamics:** Zeroth law of thermodynamics, Thermal equilibrium, concept of temperature. Carnot engine and its efficiency. First law of thermodynamics. Second law of thermodynamics: irreversible and reversible processes. Work, heat, and internal energy.

**Unit 9 – Kinetic Theory of Gases:** Kinetic concept of pressure, theory of gases-assumptions. Work done on compressing a gas, equation of state of a perfect gas. Kinetic energy and temperature: Mean free path, Avogadro’s number; RMS speed of gas molecules; Degrees of freedom, applications to specific heat capacities of gases, Law of equipartition of energy.

**Unit 10 – Oscillations and Waves**:

- Periodic functions. Periodic motion – period, frequency, displacement as a function of time. Simple harmonic motion (S.H.M.), phase; its equation; energy in S.H.M. – potential and kinetic energies; oscillations of a spring – force constant and restoring force; Simple pendulum – derivation of expression for its time period; Free, damped oscillations, forced and resonance.
- Displacement relation for a progressive wave. Wave motion. Principle of superposition of waves, reflection of waves, Doppler effect in sound, Beats, Standing waves in strings, fundamental mode, organ pipes and harmonics, Longitudinal and transverse waves, speed of a wave.

**Unit 11 – Electrostatics:**

- Forces between multiple charges, electric charges: Coulomb’s law-forces between two point charges, Conservation of charge; continuous charge distribution and superposition principle.
- Electric field: Electric field lines, Electric dipole, Electric field due to a dipole, Electric field due to a point charge, Torque on a dipole in a uniform electric field.
- Electric potential, electric dipole and system of charges and its calculation for a point charge; Electrical potential energy of a system of two point charges in an electrostatic field; Equipotential surfaces. 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.
- Dielectrics and electric polarization, Conductors and insulators, capacitor, capacitance of a parallel plate capacitor with and without dielectric medium between the plates, combination of capacitors in series and in parallel, Energy stored in a capacitor.

**Unit 12 – Current Electricity:**

- Ohm’s law, Electric current, Electrical resistance, Drift velocity, V-I characteristics of non-ohmic and Ohmic conductors, Resistances of different materials, Electrical resistivity, Electrical power and energy, Colour code for resistors; Temperature dependence of resistance; Series and parallel combinations of resistors.
- Combination of cells in series and in parallel, potential difference and emf of a cell, Electric Cell and its Internal resistance. Wheatstone bridge, Metre bridge. Kirchhoffs laws and their applications. Potentiometer – principle and its applications.

**Unit 13 – Magnetic Effects of Current and Magnetism:**

- Ampere’s law and its applications to infinitely long current carrying straight wire and solenoid. Biot – Savart law and application to current carrying circular loop. Force on a moving charge in electric fields and uniform magnetic. Cyclotron.
- Moving coil galvanometer, conversion to ammeter and its current sensitivity and voltmeter. Force between two parallel current-carrying conductors-definition of ampere, Force on a current-carrying conductor in a uniform magnetic field. Torque experienced by a current loop in uniform magnetic field.
- Para-, dia- and ferro- magnetic substances. Current loop as a magnetic dipole and its magnetic dipole moment. Earth’s magnetic field and magnetic elements. Bar magnet as an equivalent solenoid, magnetic field lines.
- Electromagnets and permanent magnets, Hysteresis, Magnetic susceptibility and permeability.

**Unit 14 – Electromagnetic Induction and Alternating Currents:** Faraday’s law, current and induced EMF; Electromagnetic induction. Mutual and self inductance. Eddy currents reactance, Lenz’s Law and impedance; Peak and rms value of alternating current/ voltage, alternating currents; resonance, LCR series circuit; transformer and AC generator. Quality factor, wattless current, power in AC circuits.

**Unit 15 – Electromagnetic Waves:** Transverse nature of electromagnetic waves. Electromagnetic characteristics and waves.

Electromagnetic spectrum (microwaves, radio waves, visible, infrared, X-rays, ultraviolet, gamma rays). Applications of e.m. waves.

**Unit 16 – Optics:**

- Total internal reflection and its applications, Reflection and refraction of light at plane and spherical surfaces, Deviation, mirror formula, Lens Formula, Dispersion of light by a prism Magnification, Combination of thin lenses in contact, Power of a Lens, Microscope and and their magnifying powers, Astronomical Telescope (reflecting and refracting).
- Laws of reflection and refraction using Huygen’s principle. Wave optics: wavefront and Huygens’ principle, coherent sources and sustained interference of light, Young’s double slit experiment and expression for fringe width, Interference. width of central maximum, Diffraction due to a single slit. Astronomical telescopes and resolving power of microscopes, plane polarized light, Polarisatio; Brewster’s law, Polaroids and uses of plane polarized light.

**Unit 17 – Dual Nature of Matter and Radiation:** Photoelectric effect, Dual nature of radiation. Einstein’s photoelectric equation; Hertz and Lenard’s observations; Matter waves-wave nature of particle, particle nature of light. Davis son-Germer experiment, de Broglie relation.

**Unit 18 – Atoms and Nuclei:** Rutherford’s model of atom; Alpha-particle scattering experiment; Bohr model, hydrogen spectrum, energy levels. Atomic masses, composition and size of nucleus, isotopes, isotones, isobars. Radioactive decay law, Radioactivity-alpha, gamma particles/rays, beta and their properties. mass defect; Mass-energy relation, binding energy per nucleon, nuclear fission and fusion and its variation with mass number.

**Unit 19 – Electronic Device: S**emiconductor diode: Semiconductors; and reverse bias, I-V characteristics in forward; diode as a rectifier; photodiode, solar cell and 1-V characteristics of LED, Zener diode; Transistor as a switch. Junction transistor, characteristics of a transistor, transistor action; oscillator and transistor as an amplifier (common emitter configuration). Zener diode as a voltage regulator. Logic gates (OR, NOR, NAND, NOT and AND).

**Unit 20 – Communication Systems: **Sky and space wave propagation, Propagation of electromagnetic waves in the atmosphere; Amplitude, Need for modulation, Bandwidth of signals and Frequency Modulation, Basic Elements of a Communication System (Block Diagram only) and Bandwidth of Transmission medium.

**JEE Main Physics Syllabus 2020 – Section B**

**Unit 21 – Experimental Skills**

- Metre Scale-mass of a given object by principle of moments.
- Simple Pendulum-dissipation of energy by plotting a graph between square of amplitude and time.
- Screw gauge-its use to determine thickness/ diameter of thin sheet/wire.
- Young’s modulus of elasticity of the material of a metallic wire.
- Surface tension of water by capillary rise and effect of detergents.
- Vernier callipers-its use to measure internal and external diameter and depth of a vessel.
- Characteristic curves of a transistor and finding current gain and voltage gain.
- Co-efficient of Viscosity of a given viscous liquid by measuring terminal velocity of a given spherical body.
- Speed of sound in air at room temperature using a resonance tube.
- Identification of Diode, LED, Transistor, IC, Resistor, Capacitor from mixed collection of such items.
- Plotting a cooling curve for the relationship between the temperature of a hot body and time.
- Specific heat capacity of a given (i) solid and (ii) liquid by method of mixtures.
- Resistivity of the material of a given wire using metre bridge.
- Resistance and figure of merit of a galvanometer by half deflection method
- Resistance of a given wire using Ohm’s law.
- Potentiometer-
- Determination of internal resistance of a cell.
- Comparison of emf of two primary cells.
- Plot of angle of deviation vs angle of incidence for a triangular prism.
- Characteristic curves of a Zener diode and finding reverse break down voltage.
- Focal length of the following using parallax method:
- Convex mirror
- Concave mirror, and
- Convex lens
- Characteristic curves of a p-n junction diode in forward and reverse bias.
- Refractive index of a glass slab using a traveling microscope.
- Using multimeter to:
- See the unidirectional flow of current in case of a diode and an LED.
- Distinguish between npn and pnp type transistor
- Identify base of a transistor
- Check the correctness or otherwise of a given electronic component (diode, transistor or IC).

**JEE Main Exam Pattern 2020**

The ** Joint Entrance Examination (JEE) Main 2020** will have two papers. Paper I is for B.E. and B.Tech admission, while Paper II is conducted for B.Arch/ B.Planning course. NTA will organise the exam in online mode. Paper I has three important subjects – Physics, Chemistry and Mathematics. There will be a total of 75 questions, 25 questions from each subject. Candidates are encouraged to avoid making errors as NTA has negative marking scheme for the exam. Check out the below table and understand the exam structure.

Particulars | Paper-I |

Exam mode | Online (CBT) |

Duration | 3 hours |

Question type | Objective-type questions |

Subjects | 3 (Physics, Chemistry and Mathematics) |

Total number of questions | 75 (25 questions in each Physics, Chemistry, and Mathematics) |

Total marks | 300 |

Marking scheme | 4 marks for each correct answer |

Negative marking scheme | 1 incorrect answer leads to 1 mark deduction |

**Best Recommended Books for JEE Main 2020 Physics**

To facilitate your preparation and to ensure that your chances of clearing the exam are high, we have compiled some of the best-recommended books/ study materials for Physics.

- Concepts of Physics (Vol 1 and Vol 2) by H.C. Verma
- Arihant Physics by D.C. Pandey
- Problems in General Physics by I.E. Irodov
- Advanced level Physics by Nelson and Parker
- Elements of Dynamics by S.L.Loney
- Fundamentals of Physics by Resnick, Walker and Halliday