Physics Important Derivation for Class 12 (CBSE)

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Class 12th board examination will take place in March 2019. You must have started your preparation with great seriousness as JEE Main January session is also around the corner. Science students have to balance boards as well as JEE Main. Of all subjects, physics is considered difficult, so here we have some important derivation to improve your score.

Read how CBSE will adjust class 10th and 12th board date sheet with respect to JEE Main 2019

To improve your score, you can utilize the study material available from the best sources. There is also a chance to score 100% marks in Physics, Chemistry, Maths with effective time management. This article is dedicated to provide the solution to the most difficult part of class 12th- Physics important derivation.

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Written practice is a must for getting a grasp over physics derivation. This is no doubt a difficult subject, so it need to be prepared accordingly. You can follow topper’s guidelines to utilize your time and syllabus in the best manner. You can apply for JEE Main only if you are in the top 20 percentile cut off of class 12th. A pro tip is to go for written practice of the important derivations so that you remember them by heart.

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JEE Main 2019 Syllabus is also vast. When you prepare well for your board exams, JEE Main preparation becomes easy as majority questions in this exam are from NCERT books.

There are some queries that all students want to be addressed. Some of them are mentioned below-

  • What are important topics to be prepared for Board Exam?
  • What are the important derivations for physics section?
  • Which are the numerical should I perform for the Board exam?

Here are the chapter-wise derivation for class 12th Physics.

Physics Important Derivation

Download Important Derivation from here

Physics derivation

Unit No 1: Electrostatics

  1. Coulomb’s Law in Vector Form
  2. Newton’s Third Law
  3. Electric Field Intensity on Axial Line & Equatorial Line of an Electric Dipole
  4. Electric Potential due to a point charge.
  5. Electrical Potential on Axial Line & Equatorial Line of Electric Dipole
  6. Electric Field Intensity at various point due to a uniformly charged spherical shell (thin and thick both)
  7. Electric Potential due to a thin infinite plan sheet of charge
  8. Capacitance of parallel plate capacitor (with or without dielectric medium)
  9. Application of Gaus Theorem

Unit No 2: Current Electricity

  1. Expression of drift velocity
  2. Relation between drift velocity and current
  3. series and parallel connection of resistors
  4. Application of Gaus Theorem is calculation of electric field intensity due to a thin infinite plane sheet of charge and uniformly charged spherical shell (or conducting sphere)

Unit No:03: Magnetic Effects of Current and Magnetism

  1. The biot-savert law in the calculation of magnetic field due to current carrying circular loop
  2. Ampere’s law and its application
  3. Force on a moving charge in uniform magnetic and electric fields
  4. Cyclotrons
  5. Force on a current carrying in a uniform magnetic field
  6. Force between two parallel current carrying conductors
  7. Torque experienced by a current loop in uniform magnetic fields
  8. Current loop as a magnetic dipole and its magnetic dipole moment
  9. Magnetic dipole moment of a revolving electron
  10. Magnetic field intensity due to magnetic dipole (bar magnetic) along its axis and its perpendicular axis
  11. Torque on a magnetic dipole (bar magnet) in a uniform magnetic field

Unit No: 04 Electromagnetic Induction and Alternating Current

  1. EMF (i.e. EMF induced in a rod moving in Uniform EMF)
  2. Self and mutual induction
  3. Relation between peak and RMS value current
  4. Reactance, impedance and average power in series LCR, LR, CR circuit
  5. Resonance in case of series LCR circuit

Unit No 05: Electromagnetic Waves

  1. Displacement Current

Unit No 06: Optics

  1. Lens-Makers Formula
  2. Refraction at convex surfaces
  3. Refraction index at minimum deviation in prism
  4. Young’s double slit experiment
  5. Diffraction using single slit
  6. Polarisation
  7. Minimum deviation in prism

Unit No 07: Dual nature of radiation and matter

  1. Relationship between cut off potential, frequency of the incident photon and threshold frequency
  2. De broglie relation

Unit No 08: Atoms and Nuclei

  1. Radius of hydrogen-like atoms

Unit No 09: Electronic Devices

  1. Common base transistor amplifier
  2. Common emitter transistor amplifier

Unit 10: Communication system

  1. AM and FM (Amplitude and frequency modulation)

These above are the important derivation which are previously asked many a times in the board exam. These are really helpful when you are preparing for JEE Main Syllabus because once you have good command over basics, you can solve easily numerical related to these topics.

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