# which topics are most important for iit-jee entrance exam?

which topics are most important for iit-jee entrance exam?

## 2 Answers

Hi Subhrant

mechanics comprises 33% of jee paper

# IIT JEE 2012 Physics Syllabus

**Indian Institute of Technology Joint Entrance Examination Physics Syllabus 2012**

**General :**

Units and dimensions, dimensional analysis; least count, significant figures; Methods of measurement and error analysis for physical quantities pertaining to the following experiments : Experiments based on using Vernier calipers and screw gauge (micrometer), Determination of g using simple pendulum, Youngs modulus by Searles method, Specific heat of a liquid using calorimeter, focal length of a concave mirror and a convex lens using U – V method, Speed of sound using resonance column, Verification of Ohms law using voltmeter and ammeter, and specific resistance of the material of a wire using meter bridge and post office box.

**Mechanics :**

Kinematics in one and two dimensions ( Cartesian coordinates only ), projectiles; Uniform Circular motion; Relative velocity.

Newtons laws of motion; Inertial and uniformly accelerated frames of reference; Static and dynamic friction; Kinetic and potential energy; Work and power; Conservation of linear momentum and mechanical energy.

Systems of particles; Centre of mass and its motion; Impulse; Elastic and inelastic collisions.

Law of gravitation; Gravitational potential and field; Acceleration due to gravity; Motion of planets and satellites in circular orbits; Escape velocity.

Rigid body, moment of inertia, parallel and perpendicular axes theorems, moment of inertia of uniform bodies with simple geometrical shapes; Angular momentum; Torque; Conservation of angular momentum; Dynamics of rigid bodies with fixed axis of rotation; Rolling without slipping of rings, cylinders and spheres; Equilibrium of rigid bodies; Collision of point masses with rigid bodies. Linear and angular simple harmonic motions.

Hookes law, Youngs modulus.

Pressure in a fluid; Pascals law; Buoyancy; Surface energy and surface tension, capillary rise; Viscosity ( Poiseuilles equation excluded ), Stokes law; Terminal velocity, Streamline flow, equation of continuity, Bernoullis theorem and its applications.

Wave motion ( plane waves only ), longitudinal and transverse waves, superposition of waves; Progressive and stationary waves; Vibration of strings and air columns; Resonance; Beats; Speed of sound in gases; Doppler effect (in sound).

**Thermal Physics :**

Thermal expansion of solids, liquids and gases; Calorimetry, latent heat; Heat conduction in one dimension; Elementary concepts of convection and radiation; Newtons law of cooling; Ideal gas laws; Specific heats ( Cv and Cp for monoatomic and diatomic gases ); Isothermal and adiabatic processes, bulk modulus of gases; Equivalence of Heat and Work; First Law of Thermodynamics and its applications ( only for ideal gases ); Blackbody radiation: absorptive and emissive powers; Kirchhoffs law; Wiens displacement law, Stefans law.

**Electricity and Magnetism :**

Coulombs law; Electric field and potential; Electrical potential energy of a system of point charges and of electrical dipoles in a uniform electrostatic field; Electric field lines; Flux of electric field; Gausss law and its application in simple cases, such as, to find field due to infinitely long straight wire, uniformly charged infinite plane sheet and uniformly charged thin spherical shell.

Capacitance; Parallel plate capacitor with and without dielectrics; Capacitors in series and parallel; Energy stored in a capacitor.

Electric current; Ohms law; Series and parallel arrangements of resistances and cells; Kirchhoffs laws and simple applications; Heating effect of current.

Biot Savarts law and Amperes law; Magnetic field near a current-carrying straight wire, along the axis of a circular coil and inside a long straight solenoid; Force on a moving charge and on a current – carrying wire in a uniform magnetic field.

Magnetic moment of a current loop; Effect of a uniform magnetic field on a current loop; Moving coil galvanometer, voltmeter, ammeter and their conversions.

**Electromagnetic induction :**

Faradays law, Lenzs law; Self and mutual inductance; RC, LR and LC circuits with d.c. and a.c. sources.

**Optics :** Rectilinear propagation of light; Reflection and refraction at plane and spherical surfaces; Total internal reflection; Deviation and dispersion of light by a prism; Thin lenses; Combinations of mirrors and thin lenses; Magnification.

**Wave nature of light :** Huygens principle, interference limited to Youngs double – slit experiment.

**Modern Physics : ** Atomic nucleus; Alpha, beta and gamma radiations; Law of radioactive decay; Decay constant; Half – life and mean life; Binding energy and its calculation; Fission and fusion processes; Energy calculation in these processes.

Photoelectric effect; Bohrs theory of hydrogen – like atoms; Characteristic and continuous X – rays, Moseleys law; de Broglie wavelength of matter waves.

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