Section - A (Physics) : 45 marks
Physics is the first section of the NEE II test which consists of 45 marks. The Physics syllabus of NERIST for admission to engineering programs is given below:
Units and Dimensions : Units for measurements, systems of units, fundamental and derived units, SI units, Dimensional analysis and their applications.
Motion in one Dimension : Objects in motion in one dimension, motion in a straight line, uniform motion, its graphical representation and formulae, speed and velocity, relative velocity, instantaneous velocity, Uniformly accelerated motion, its position-time graph, velocity-time graph and formulae, Description of motion using differentiation and integration.
Motion in two and three Dimensions : Vectors and scalars, representations of vectors in two and three dimensions, unit vector, vector addition and multiplication, resolution of vectors in plane, rectangular components, scalar and vector products. Motion in two dimensions; projectile motion, uniform circular motion, common examples of three dimensional motion.
Law of Motion : Elementary ideas of inertial and non-inertial frames, force and inertia. First law of motion, Second law of motion, impulse, Third law of motion, examples of third law. Momentum linear momentum, conservation of linear momentum. equilibrium of concurrent forces, static and kinetic friction, laws of friction, rolling friction, lubrication.
Work, Energy and Power : Work done by a constant force and variable force; Kinetic and potential energy. Power; conservative and non-conservative forces, work-energy principle. Spring constant, potential energy of a spring. Gravitational potential energy, mass-energy equivalence, conservation of energy, elastic collision in one and two dimensions.Rational Motion : Centre of mass of a two particle system,;centre of mass of a rigid body, general motion of a rigid body, motion of centre of mass, nature of rotational motion, rotational motion of a single particle in two dimensions. Uniform circular motion and their examples. Centripetal and centrifugal forces, torque, angular momentum, conservation of angular momentum. Moment of inertia and its physical significance, statement of parallel axis and perpendicular axis theorem, moment of inertia of ring, disk and straight rod.
Gravitation : Newton’s law of gravitation, universal gravitational constant ‘G’, acceleration due to gravity ‘g’, mass and density of the earth, inertial and gravitational mass, variations of ‘g’. Gravitational potential energy near the earth surface, gravitational potential, orbital velocity, escape velocity, planetary motion, geostationary satellite, Kepler’s laws.
Properties of Matter : Inter atomic and intermolecular forces, states of matter. Elastic properties of solids, Hooke’s law, Young’s modulus, bulk modulus and modulus of rigidity.Defination of Poisson’s ratio.
Fluid pressure, Pascal’s law, buoyancy, flotation, Archimedes’ principle, atmospheric pressure, Surface energy and surface tension, angle of contact, capillary rise, viscosity, sphere falling through a fluid, Stokes’ law, streamline flow, Reynold’s number, Bernoulli’s theorem and its applications.
Kinetic theory of gases, pressure exerted by a gas, kinetic energy and temperature, measurements of temperature, absolute temperature scale, gas laws and Avogadro’s number.
Heat and Thermodynamics : Zeroth and first law of thermodynamics, specific heat of ideal gases at constant volume and constant pressure, relation between them, thermodynamic state, equation of state, pressure temperature phase diagram, Thermodynamic processes - reversible, irreversible isothermal and adiabatic, Carnot cycle. Second law of thermodynamics, entropy (elementary ideas), heat engines, efficiency of heat engines Thermal conductivity, Black body radiation, Kirchhoff’s law, Prevost’s theory of heat exchange, Wien’s law, Stefan’s law, Newton’s law of cooling.
Oscillations and Waves : Periodic motion, simple harmonic motion, equation of simple harmonic motion, kinetic and potential energy in simple harmonic motion Oscillations due to a spring - mass system, simple pendulum, time period of a simple pendulum, forced oscillations, resonance and damped oscillations.
Wave motion, equation of wave, speed of a wave, principle of superposition, reflection of waves, harmonic waves, formation of standing waves, standing wave in string and pipe, Beats, Doppler effect. Acoustics of buildings. Ultrasonic waves (elementary ideas).
Electrostatics : Charges and their conservation, Coulomb’s law, electric field and potential due to a point charge, Dipole, its fields along the axis and perpendicular to the axis, equipotential surfaces. Concept of dielectrics and dielectric constant, Gauss theorem and its applications to determine electric field inside and outside a conducting sphere, Conductors and insulators, Forces and torques experienced by a dipole in uniform electric field, presence of free charges and bound charges inside a conductor. Capacitance, parallel plate capacitor with air and dielectric medium between the plates, series and parallel combination of capacitor, energy stored in a capacitor.
Current Electricity : Electric current, Ohm’s law, resistivity, current density, concept of drift velocity and mean free path of charge carriers. Resistance of different materials, temperature dependence of resistance, resistances in series and parallel, Kirchhoff’s law-illustrations by simple examples. Wheatstone’s bridge and its application in meter bridge; principle of potentiometer - its applications for comparing emf of two cells and determination of internal resistance of a cell.
Thermal and hemical Effects of Current : Electric power, heating effect of current, Joule’s law, chemical effect of current and Faraday’s laws of electrolysis. Cells - primary and secondary. Thermoelectricity - Seebeck effect and its application, Peltier effect and Thomson effect.
Magnetic effect of Current : Orested’s experiment, Biot-Savart law, magnetic field due to a straight wire and a circular loop, Ampere’s law, magnetic field due to solenoid. Force on a moving charge in a uniform magnetic field, cyclotron. Force on a current carrying conductor and torque on current loop in a magnetic field, forces between two parallel current carrying conductors, definition of Ampere, Moving coil galvanometer and its conversion into ammeter and voltmeter.
Magnetism : Natural and man made magnets, properties of a bar magnet, current loop as magnetic dipole, magnetic moment, torque on a magnetic dipole in a uniform magnetic field, lines of force in a magnetic field, Earth’s magnetic field and its sources. Tangent galvanometer, vibration magnetometer, Para-,dia- and ferro- magnetic substances,; electromagnets and permanent magnets.
Electromagnetic Induction and Alternating Current : Induced emf, Faraday’s laws, Lenz’s law electromagnetic induction, self and mutual inductance, Alternating current, impedance and reactance, power in AC, circuit with L, C and R, series circuits, phasor diagram, resonance circuit. Electrical machines and devices - transformers, AC generators, choke and starter.
Electromagnetic Waves : Elementary idea of electromagnetic waves, electromagnetic spectra, radio and microwaves, infrared, visible, ultraviolet, X-rays and C- rays, Elementary idea of propagation of electromagnetic waves in atmosphere.
Waves Optics : Wave front and Huygen’s principle. Reflection and refraction of plane wave at a plane surface. Interference - Young’s double slit experiment, Diffraction - diffraction due to single slit, linearly polarized light, use of polarized light and polaroids, Doppler effect.
Ray Optics and Optical Instruments : Sources of light, luminous intensity, luminous flux, reflection of light at plane surfaces and spherical surfaces, curved mirrors, mirror formula. Refraction of light, refractive index, total internal reflection, spherical lenses, thin lens formula, lens maker’s formula and magnification. Refraction and dispersion of light due to prism, spectrometer - its use for the determination of refractive index of material of a prism, Spectra absorption and emission, scattering of light in atmosphere, primary rainbow. Optical instruments - simple and compound microscopes, refracting and reflecting telescopes, resolving and magnifying power of a telescope.
Electrons and Photons : Electrical conduction in gases. Production and properties of cathode rays, Thomson’s experiment for e/m of electrons, charge of electron by Millikan’s oil drop experiment. Particle nature of light, Einstein’s photoelectric equation, photo cells.
Atoms Molecules and Nucleus : Alpha particle scattering experiment, size of nucleus, Rutherford’s model, Bohr’s model, energy quantization, hydrogen spectrum,.Composition of nucleus, atomic masses, radioactivity, alpha, beta and gamma rays and their properties, radioactive decay. Mass-energy relation, binding energy and mass defect. Nuclear fission, controlled and uncontrolled nuclear reactions, nuclear reactor, and nuclear fusion.
Solids and Semiconductor Devices : Energy bands in solids, conductors, insulators and semiconductors, semi conducting materials - Si and Ge, P-N junction, diodes, solar cells, junction transistors, diode as a rectifier, transistor as an amplifier and an oscillator; Logic gates.
