JEE MAIN PHYSICS SYLLABUS

JEE MAIN PHYSICS SYLLABUS

The syllabus of Jee Main Physics has 2 parts. One is theory and other is practical. Weightage of the theory is 80% and of practical is 20%.

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SECTION A

UNIT 1: Physics and Measurement

S I units, Fundamental and derived units, Physics technology and society, Least count, Errors in measurement, Significant figures accuracy and precision of measuring instruments. Dimensional analysis and its applications.Dimensions of Physical quantities.

UNIT 2: Kinematics

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

UNIT 3: 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.

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UNIT 4: Work, Energy and Power

Work done by a constant force and a variable force; work-energy theorem, kinetic and potential energies, power.

The potential energy of a spring, conservative and non-conservative forces, conservation of mechanical energy, Elastic and inelastic collisions in one and two dimensions.

UNIT 5: Rotational Motion

Centre of the mass of a two-particle system, Centre of the mass of a rigid body; the moment of a force, torque.Rigid body rotation, equations of rotational motion. Basic concepts of rotational motion; angular momentum, conservation of angular momentum and its applications; the radius of gyration moment of inertia, Values of moments of inertia for simple geometrical objects, parallel and perpendicular axes theorems and their applications.

UNIT 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.

UNIT 7: Properties of Solids and Liquids

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

UNIT 8: Thermodynamics

Thermal equilibrium, zeroth law of thermodynamics, the concept of temperature.The second law of thermodynamics: reversible and irreversible processes. Carnot engine and its efficiency. Heat, work and internal energy. First law of thermodynamics.

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UNIT 9: Kinetic Theory of Gases

The equation of state of a perfect gas, work done on compressing a gas.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.Kinetic theory of gases – assumptions, the concept of pressure. Kinetic energy and temperature.

UNIT 10: Oscillations and Waves

Periodic motion – period, frequency, displacement as a function of time. Periodic functions.Kinetic and potential energies; Simple pendulum – derivation of expression for its time period; Free, forced and damped oscillations, resonance.Simple harmonic motion (S.H.M.) and its equation; phase; oscillations of a spring -restoring force and force constant; energy in S.H.M.

Displacement relation for a progressive wave. The principle of superposition of waves, a reflection of waves, Standing waves in strings and organ pipes.Wave motion. Longitudinal and transverse waves, the speed of a wave. fundamental mode and harmonics, Beats, Doppler effect in sound.

UNIT 11: Electrostatics

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 charges: Conservation of charge, Coulomb’s law-forces between two point charges, forces between multiple charges; superposition principle and continuous charge distribution.

Conductors and insulators, Dielectrics and electric polarisation, capacitor, a combination of capacitors in series and in parallel, the capacitance of a parallel plate capacitor with and without dielectric medium between the plates, Energy stored in a capacitor.

Electric flux, Gauss’s law and its applications to find field due to infinitely long uniformly charged straight wire, uniformly charged infinite plane sheet and uniformly charged thin spherical shell. Electric potential and its calculation for a point charge, electric dipole and system of charges; Equipotential surfaces, Electrical potential energy of a system of two point charges in an electrostatic field.

UNIT 12: Current Electricity

Electric Cell and its Internal resistance, potential difference and emf of a cell, the combination of cells in series and in parallel. Kirchhoff’s laws and their applications. Wheatstone bridge, Metre bridge. Potentiometer – principle and its applications.

Electric current, Drift velocity, Ohm’s law, Electrical resistance, Resistances of different materials, V-I characteristics of Ohmic and nonohmic conductors, Electrical energy and power, Electrical resistivity, Colour code for resistors; Series and parallel combinations of resistors; Temperature dependence of resistance.

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UNIT 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.

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

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.

Force on a current-carrying conductor in a uniform magnetic field. The force between two parallel current-carrying conductors-definition of the ampere. Torque experienced by a current loop in uniform magnetic field; Moving coil galvanometer, its current sensitivity and conversion to ammeter and voltmeter.

UNIT 14: Electromagnetic Induction and Alternating Currents

Electromagnetic induction; Faraday’s law, induced emf and current; Lenz’s Law, Eddy currents.Alternating currents, peak and RMS value of alternating current/ voltage; reactance and impedance; LCR series circuit, resonance. Self and mutual inductance. The quality factor, power in AC circuits, wattless current. AC generator and transformer.

UNIT 15: Electromagnetic Waves

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

Electromagnetic waves and their characteristics. Transverse nature of electromagnetic waves.

UNIT 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. Diffraction due to a single slit, width of central maximum. Resolving power of microscopes and astronomical telescopes. Interference, Young’s double slit experiment and expression for fringe width, coherent sources and sustained interference of light. Polarisation, plane polarised light; Brewster’s law uses of plane polarised light and Polaroids.

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UNIT 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. Davisson-Germer experiment.

UNIT 18: Atoms and Nuclei

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

UNIT 19: Electronic Devices

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.Semiconductors; semiconductor diode: I-V characteristics in forward and reverse bias; diode as a rectifier; I-V characteristics of LED, a photodiode. Logic gates (OR, AND, NOT, NAND and NOR). The transistor as a switch.

UNIT 20: Communication Systems

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

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SECTION-B

UNIT 21: Experimental Skills

Familiarity with the basic approach and observations of the experiments and activities:

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

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

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

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

5. The surface tension of water by capillary rise and effect of detergents.

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

7. The speed of sound in air at room temperature using a resonance tube.

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

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

10. The resistance of a given wire using Ohm’s law.

11. The resistivity of the material of a given wire using metre bridge.

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

13. The focal length of (i) Convex mirror (ii) Concave mirror, and (iii) Convex lens using parallax method.

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

15. Potentiometer – (i) Comparison of emf of two primary cells. (ii) Determination of internal resistance of a cell.

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

17.The plot of the angle of deviation vs angle of incidence for a triangular prism.

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

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

20. Characteristic curves of a Zener diode and finding reverse breakdown voltage.

21.Using the multimeter to (i) Identifying 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 a LED. (iv) Check the correctness or otherwise of a given electronic component (diode, transistor or IC).

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

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