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TIPS FOR CBSE CLASS 12 PHYSICS

It's a head-on to score in CBSE class 12 physics, most of you are looking up to score 80+ in CBSE class 12 physics

Physics play's a quite an important role in your career as well because if you look at the collages than you will find that today collages are happening to be marks oriented and their cutoffs are reached g to hills year.



take some colleges like the Hansraj college of Delhi University or the other colleges of the Delhi University, they rising entrance marks every year, now it moves near to 90 above all the time.

how you can score in CBSE class 12 physics this year?

CBSE class 12 physics, when you are at the exams then it's a stupid thing to say that marks don't matter CBSE Class 12 Physics if you are looking for top colleges and want to enter their gates then obviously marks matters a lot more then anything at this time.

There are certain things you have look at before board exam of CBSE class 12 physics 2019,

  1. First, you need to preparation must be on the peak for CBSE class 12 physics exam 2019.
  2. CBSE class 12 physics is totally based on numericals and definitions.
  3. You must work on the derivations of CBSE class 12 physics.
  4. Derivations are asked most of the times in the CBSE class 12 physics in maximum marks.

Important topics for CBSE class 12 physics in 2019?

CBSE class 12 physics is divided into two part, NCERT physics part 1 and NCERT Physics part 2,
both  NCERT parts are equally important and have an equal distribution of marks,

BUT some of the chapters of NCERT are important for CBSE Class 12 physics, their influence is quite higher others topics of NCERT class 12 physics.

Important chapter for CBSE class 12 physics 2019

topics and the chapters below are quite important for your CBSE class 12 physics exam 2018-2019,
prepare all these chapters dedication to remember one thing that derivations are most important for your CBSE class 12 physics exam 2019.

Chapter 1: Electric Charges and Fields
Coulomb’s law in vector form (Agreement with Newton’s third law i.e. F12 = ‒F21).
Electric field intensity on Equatorial Line & Axial Line of an Electric Dipole.
Electric Field Intensity at various points due to a uniformly charged spherical shell (thin & thick both).
Electric field intensity due to a thin infinite plane sheet of charge.
Application of Gauss theorem in a calculation of electric field.
Chapter 2: Electrostatic Potential and Capacitance
Electric Potential due to a point charge.
Electric Potential on Axial Line & Equatorial Line of an Electric Dipole.
A capacitance of parallel plate capacitor (with or without dielectric medium).
Energy stored in a capacitor.

Unit 2: Current Electricity
There is only 1 chapter in this unit that is Current Electricity. Important concepts and derivations expected to be asked in CBSE Class 12 Physics board exam 2018 from this chapter are given below:
Chapter ‒ 3: Current Electricity
An expression for drift velocity.
A relation between current and drift velocity.
Series and parallel connection of resistors (Derivations and Numerical Problems).
Kirchhoff’s laws and simple applications (Definition and Numerical Problems).
Potentiometer (Numerical are expected this year)

Unit 3: Magnetic Effects of Current and Magnetism
There are two chapters in this unit of Class 12 Physics NCERT textbook. Name of these chapters is Moving Charges and Magnetism & Magnetism and Matter.
Important topics and derivations of these chapters are given below:
 Chapter – 4: Moving Charges and Magnetism
Application of Biot - Savart law (Calculation of magnetic field due to current carrying circular loop).
Ampere’s law and its applications (Magnetic field due to an infinitely long straight wire; Straight and toroid solenoids).
Force on a moving charge in uniform magnetic and electric fields (Numerical and Derivation)
Cyclotron (Diagram, Theory, and Derivation).
Force on a current-carrying conductor in a uniform magnetic field (Derivation and Numerical Problems).
The force between two parallel current-carrying conductors (including a definition of an ampere).
Torque experienced by a current loop in a uniform magnetic field.
Moving coil galvanometer-its current sensitivity and conversion to ammeter and voltmeter.
Chapter ‒ 5: Magnetism and Matter
Current loop as a magnetic dipole and its magnetic dipole moment.
Magnetic dipole moment of a revolving electron.
Magnetic field intensity due to a magnetic dipole (bar magnet) along its axis and perpendicular to its axis.
Torque on a magnetic dipole (bar magnet) in a uniform magnetic field.
Properties of Para-, dia- and Ferro - magnetic substances

Unit 4 Electromagnetic Induction and Alternating Current
There are two chapters in this unit of Class 12 Physics Syllabus. Name of these chapters is Electromagnetic Induction and Alternating Current.
Important topics and derivations of these chapters are given below:
Chapter – 6: Electromagnetic Induction
Motional EMF or Induced EMF (Derivations and Numerical Problems).
Mutual Induction and Self Induction.
Chapter – 7: Alternating Current
A relation between rms and peak value of current & emf (Numerical Problems and Derivations).
Reactance, impedance & average power in series LCR, LR, CR or LR circuit. (Numerical Problems and Derivations).
Resonance in series LCR circuit. (Numerical Problems and Derivations).

Unit 5: Electromagnetic waves
There is only one chapter in this unit and that is Electromagnetic waves. Important topics and derivations of this chapter are given below:
Displacement current (Basic Concept)
Characteristics and Properties of EM Waves
Electromagnetic spectrum

Unit 6 Optics
There are 2 chapters in this unit. Name of these chapters is Ray Optics and Optical Instruments & Wave Optics.
Important topics of this chapter are given below:
Chapter-9: Ray Optics and Optical Instruments
Total Internal Reflection (Definition and Numerical Problems)
Lens maker’s formula (Derivations and Numerical Problems)
Refraction and dispersion of light through a prism (Derivations and Numerical Problems)
Scattering of light (Blue color of the sky, the reddish appearance of the sun at sunrise and sunset)
Microscopes and astronomical telescopes (Ray Diagram & Numerical Problems)
Refractive Index of a Prism and Condition for Minimum Deviation (Derivations and Numerical Problems)
Chapter-10: Wave Optics
Young double slit experiment (Derivations and Numerical Problems)
Diffraction using single slit (Derivations and Numerical Problems)
Polarisation (Definition and Numerical Problems)
Unit 7: Dual Nature of Radiation and Matter
There is only one chapter in this unit. Name of the chapter is Dual Nature of Matter and Radiation. Important topics of this chapter are given below:
Chapter-11: Dual Nature of Radiation and Matter
Dual nature of radiation
Photoelectric effect
Hertz and Lenard’s observations;
Einstein’s photoelectric equation-particle nature of light
Unit 8: Atoms and Nuclei
There are two chapters in this unit. Name of these chapters is Atoms and Nuclei. Important topics and derivations of this chapter are given below:
Chapter-12: Atoms
Alpha-particle scattering experiment
Expression of radius (hydrogen-like atoms)
Bohr model, energy levels, hydrogen spectrum (Including numerical problems)
Chapter-13: Nuclei
N = Neλt
Mass defect (Definition and Numerical Problems)
Binding energy per nucleon and its variation with mass number (Definition and Numerical Problems)
Nuclear fission & Nuclear fusion (Definition and Numerical Problems)

Unit 9 Electronic Devices
Only one chapter is there in this unit. The name of this chapter is Semiconductor Electronics: Materials, Devices, and Simple Circuits. Important topics of this chapter are given below:
Chapter -14: Semiconductor Electronics: Materials, Devices, and Simple Circuits
Energy bands in Conductors; Semiconductors and Insulators (qualitative ideas only)
Semiconductor diode: I-V characteristics in forward and reverse bias
A diode as a rectifier
Junction transistor: Common base transistor amplifier and Common emitter transistor amplifier
Unit 10 Communication System
Only one chapter is there in this unit. The name of this chapter is Communication System. Important topics and derivations of this chapter are given below:
Chapter-15: Communication System
Elements of a communication system
Propagation of electromagnetic waves in the atmosphere, sky & space wave propagation, satellite communication.
Types of Modulation and Modulation Index

Above all the topics are the must do topics for of CBSE class 12 physics, if you cover all the topics correctly then no one can stop you from score higher marks in CBSE class 12 physics this year.

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