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JEE Main 2021 Physics Preparation - 5 Most Important Chapters

JEE Main Physics Paper Pattern

JEE Main paper contains 25 questions from each subject of Physics, Chemistry and Maths. Of these 25 questions, 20 questions are MCQs with one correct option and 5 questions are numerical value-based questions. The numerical value-based questions have no negative marking, whereas the MCQs have 4 marks for the correct answer and -1 for every wrong answer. 

As per the JEE Mains Physics Syllabus, the Physics part is vast and consists of 21 chapters. An analysis of previous years’ JEE Main papers show that roughly 50% of the questions come from 5 to 6 topics. So, if students are thorough with these JEE exam preparation topics, it becomes very easy to score good marks. The list of the important chapters and topics are as follows.

1)      Electrostatics

  • Effects of insertion of dielectric on electric field
  • Electrical energy density
  • Potential between the plates
  • Charge and force between the plates
  • Gauss’s law
  • Electric flux
  • Combination of capacitors

2)      Optics

  • Young’s double slit experiment
  • Total internal reflection
  • Combination of lenses
  • Coherent sources
  • Thin film interference
  • Lens maker’s formula
  • Dispersion without deviation
  • Deviation without dispersion
  • Total internal reflection
  • Ray diagrams

3)      Heat and thermodynamics

  • Kinetic theory of gases
  • Specific heat capacity
  • Kinetic energy of ideal gas
  • Mayer’s formula
  • Thermodynamics: Thermodynamic processes, cyclic and non-cyclic processes, Carnot cycle, heat engine, refrigerator
  • Heat: Thermal expansion, calorimetry, Newton’s law of cooling

4)      Current electricity

  • Drift velocity
  • Kirchhoff’s law of electrical networks
  • Electrical measuring instruments
  • EMF and internal resistance
  • Balanced Wheatstone bridge

5)      Modern Physics

  • Photoelectric effect
  • Atomic Physics: Bohr’s model of hydrogen atom, atomic excitation
  • Nuclear Physics: Radioactive decay law, radioactivity and half-life
  • Mass defect


JEE Main 2021 Physics reference books 

According to JEE Main Physics syllabus pdf, Concepts of Physics 1 & 2 by HC Verma is a set of two volumes which you can use for Physics JEE preparation for theory as well as numerical problems. NCERT theory is also good for an in-depth understanding of concepts. Solving previous years’ question papers will also help you get an idea about the question paper and the difficulty level of questions. Solve as many full length mock tests as possible; doing so will help you in framing your strategy to attempt the question paper.

IIT JEE Preparation Tips & Tricks

  • Learn as many formulae as possible as these will help you in solving questions quickly and will save you a lot of time.
  • Do not spend much time on a single question.
  • Analyzing the options properly can help in solving the questions quickly.
  • Dimensional analysis of a problem will be very useful in case you are not getting the answer by the conceptual method.
  • Putting in the values and checking the options can help in solving problems quickly.

Due to the current Coronavirus outbreak, the April JEE Main 2021 exam has been postponed until further notice. In this critical stage of preparation for the exams, you can study from our JEE Crash Course 2021. This package comprises of FRM (Final Revision Module) & the Test Series, where the questions are modelled along the JEE pattern, to build familiarity with the exam and to improve your chances to clear Mains. To learn more about this call on 1800-212-7858.

Also, learn better from our subject matter experts by watching TopperLearning Webinar on doubt clearing for exams. So go ahead and use this proven tool to crack IIT JEE 2021. Clear your doubts with the ample exam preparation resources and JEE mentorship support on TopperLearning. To know more, ask the expert to solve your doubts within 24 hours.

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