# JEE Main 2022 Crash Course (Online) | Physics

###### -- with Vikas Sir (BTech - IIT Delhi)

”A structured and thorough revision before the exam can significantly boost your score”

Our crash course students have been scoring high in JEE Main under the guidance of Vikas Sir (IIT Delhi), who is also behind the development and recent release of ‘JEE Main 2022 – Physics Important Questions‘.

So, read through the crash course details and call us to know more and enrol in the crash course

Note that the JEE Main 2022 exams are expected to be scheduled in Feb, March, April, and May. Please check the NTA website for the latest information.

The syllabus contains two Section- A and B, Section – A pertains to the Theory Part having 80% weightage, while Sections – B contains practical component (Experimental Skills) having 20 % Weightage.

Section A – Theory Part (80%)

Physics and Measurement (1 to 2 questions)

Physics, technology and society, S I Units, fundamental and derived units, least count, accuracy and precision of measuring instruments, Errors in measurement, Dimensions of Physics quantities, dimensional analysis and its applications.

Kinematics and Vector Algebra (1 to 2 questions)

The frame of reference, motion in a straight line, Position- time graph, speed and velocity; Uniform and non-uniform motion, average speed and instantaneous velocity, uniformly accelerated motion, velocity-time, position-time graph, relations for uniformly accelerated motion, Scalars and Vectors, Vector. Addition and subtraction, zero vector, scalar and vector products, Unit Vector, Resolution of a Vector. Relative Velocity, Motion in a plane, Projectile Motion, Uniform Circular Motion.

Laws of Motion (1 question)

Force and inertia, Newton’s First law of motion; Momentum, Newton’s Second Law of motion, Impulses; 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, Power (0 to 1 question)

Work done by a content force and a variable force; kinetic and potential energies, work-energy theorem, power.
The potential energy of spring conservation of mechanical energy, conservative and neoconservative forces;

Center of Mass, Linear Momentum and Rotational Motion (2 to 3 questions)

Centre of the mass of a two-particle system, Centre of the mass of a rigid body; Elastic and inelastic collisions in one and two dimensions.

Basic concepts of rotational motion; a moment of a force; torque, angular momentum, conservation of angular momentum and its applications; the moment of inertia, the 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 (1 to 2 questions)

The universal law of gravitation. Acceleration due to gravity and its variation with altitude and depth. Kepler’s law of planetary motion. Gravitational potential energy; gravitational potential. Escape velocity, Orbital velocity of a satellite. Geo stationary satellites.

Fluids and Elasticity (1 to 2 questions)

Elasticity: Elastic behaviour, Stress-strain relationship, Hooke’s Law. Young’s modulus, bulk modulus, modulus of rigidity.

Fluids: 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 and Thermodynamics (2 to 3 questions)

Heat

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, the concept of temperature. Heat, work and internal energy. The first law of thermodynamics. The 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, the 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 and Waves (2 to 3 questions)

Simple Harmonic Motion: 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, a reflection of waves. Standing waves in strings and organ pipes, fundamental mode and harmonics. Beats. Doppler Effect in sound

Electrostatics (2 questions)

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 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.

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

Current and Electricity (1 to 2 questions)

Electric current. Drift velocity. Ohm’s law. Electrical resistance. Resistances of different materials. V-l 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, a combination of cells in series and parallel. Kirchhoff’s laws and their applications. Wheatstone bridge. Metre Bridge. Potentiometer – principle and its applications.

Magnetic Effects of Current (1 question)

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.

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

Electromagnetic Current & Alternating Currents (2 questions)

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.

Optics, EM Waves and Magnetism (2 to 3 questions)

Ray 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 Huygens principle. Interference, Young’s double-slit experiment and expression for fringe width, coherent sources and sustained interference of light. Diffraction due to a single slit, width of central maximum. Resolving power of microscopes and astronomical telescopes. Polarization, plane-polarized light: Brewster’s law, uses of plane-polarized light and Polaroid.

EM WavesElectromagnetic waves and their characteristics, Transverse nature of electromagnetic waves, Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet. X-rays. Gamma rays), Applications of e.m. waves.

MagnetismCurrent 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 ferromagnetic substances. Magnetic susceptibility and permeability. Hysteresis. Electromagnets and permanent magnets.

Modern Physics, Semiconductors and Communications (5 to 6 questions)

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 particle, 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: isotones. Radioactivity- alpha. beta and gamma particles/rays and their properties; radioactive decay law. Mass-energy relation, mass defect; binding energy per nucleon and its variation with mass number, nuclear fission and fusion.

Electronic Devices: Semiconductors; semiconductor diode: 1- V characteristics in forward and reverse bias; diode as a rectifier; I-V characteristics of LED. the 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) and oscillator. Logic gates (OR. AND. NOT. NAND and NOR). Transistor as a switch.

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

Section B – Experimental Skills (20%)

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

1. Vernier callipers-its use to measure the internal and external diameter and depth of a vessel.
2. Screw gauge-its use to determine thickness/ diameter of thin sheet/wire.
3. Simple Pendulum-dissipation of energy by plotting a graph between the square of amplitude and time.
4. Metre Scale – the mass of a given object by principle of moments.
5. Young’s modulus of elasticity of the material of a metallic wire.
6. Surf ace tension of water by capillary rise and effect of detergents,
7. Co-efficient of Viscosity of a given viscous liquid by measuring terminal velocity of a given spherical body,
8. Plotting a cooling curve for the relationship between the temperature of a hot body and time.
9. Speed of sound in air at room temperature using a resonance tube,
10. Specific heat capacity of a given (i) solid and (ii) liquid by method of mixtures.
11. The resistivity of the material of a given wire using metre bridge.
12. The resistance of a given wire using Ohm’s law.
13. Potentiometer (i). Comparison of emf of two primary cells. (ii). Determination of internal resistance of a cell.
14. Resistance and figure of merit of a galvanometer by half deflection method.
15. The focal length of; (i) Convex mirror (ii) Concave mirror, and (ii) Convex lens, using the parallax method.
16. The plot of the angle of deviation vs angle of incidence for a triangular prism.
17. Refractive index of a glass slab using a travelling microscope.
18. Characteristic curves of a p-n junction diode in forward and reverse bias.
19. Characteristic curves of a Zener diode and finding reverse break down voltage.
20. Characteristic curves of a transistor and finding current gain and voltage gain.
21. Identification of Diode. LED, Transistor. IC. Resistor. A capacitor from a mixed collection of such items.
22. Using a multimeter to: (i) Identify the base of a transistor (ii) Distinguish between NPN and PNP type transistor (iii) See the unidirectional of current in case of a diode and an LED. (iv) Check the correctness or otherwise of a given electronic component (diode, transistor or IC).

In JEE Main 2021 physics papers, there were 30 questions per physics paper, out of which one could attempt a maximum of 25 questions (20 – multiple choice questions and 5 out of 10 Integer type questions).

And as there were 4 allowed attempts (Feb, March, July and August), across these four attempts there were 24 physics papers or 720 unique questions.

Now, to score 99 percentile one had to score more than 75 marks out of 100 (on an average). And we have no doubt that you are aspiring for the same, which brings us to the current topic. Where should you focus more and what questions you should master to make sure that you get the desired percentile.

Well, there are interesting patterns emerging out of an in-depth analysis of all the papers in JEE Main 2021, 2020 and 2019. And we (team of IITians at AceJEE) are glad to bring you all the information to help you strategize your preparation in coming months. So, we wish you the very best and do follow the recommendations.

But before we jump into important question types, let’s take a quick look at the chapter wise distribution of questions. Top 5 chapters simply based on number of questions asked from that chapter are Modern Physics, Heat and Thermodynamics, Optics, Induction & Alternating Current, and Electrostatics / Kinematics (including vector algebra).

Now, while this is helpful at the high level, it doesn’t help you prepare smarter to ensure that you score high. For that you need to know the types of questions that are being asked more often than others. And in all honesty, you have to be good at solving these question types to be able to score high percentile in JEE Main physics (no exceptions). Note that the types of questions asked in mock tests of most of the coaching institutes are not aligned with the questions asked in JEE Main examinations.

So let’s being with the question: How many different types of questions are there and how many of them you need to master to score 75+ marks.

Well there are about 750 different types of questions that have been asked or could be asked in JEE Advanced, JEE Mains, NTA Abhyas, HC Verma, Cengage, DC Pandey etc. And from the perspective of JEE Advanced you should have gone through them all at least once but from the perspective of JEE Mains, good news is that examiners ask questions from a fairly limited number of question types and interestingly 124 different types of questions alone can get you more than 70 marks (out of 100), which means that you can now plan your revision so that you practice at least these 124 question types multiple times and you can be rest assured that you will do very well. ## Crash Course Details

Key features of ‘most structured crash course’ on JEE Main Physics
• 22-day crash course (90 mins class each day)
• Covers theory and all important question types asked in JEE Main
• 1 Month Free Access to ‘Important Questions‘ section of the website
• 1 Month Free Access to ‘JEE Main 2021, 2020, 2019 chapter wise questions
• 1 Month Free Access to ‘More than 180 chapter wise mock tests’
• Personalized coaching / Mentoring
Call 742-821-4999 for further details and enrolment (& don’t forget to inquire about ‘Doubt clearing classes’)

## Brief about our founder (Vikas Sir) 1. IIT Delhi (BTech in Mechanical Engineering)
2.  Purdue University, USA (MS)
3. 18 years of experience
4. Founder and Master Physics Instructor at AceJEE

Don’t miss out on the opportunity for structured revision and excellent coaching and guidance from Vikas Sir.