How to prepare and score Good marks in Physics Paper?

Class 12 Board exams are a very crucial period for any student. It is the exam where the students compete with other students across India, on an all India platform. Also you will be appearing for other competitive exams in a diverse variety of fields. For students aspiring to appear in a competitive exam in the field of science, physics becomes a very important subject. It is not hard to get a 100 in physics in your board exams. You just need to prepare a good strategy with which you can move on.

 

  1. Prepare a good Timetable – A minimum of 3 hours of study will be sufficient to score well in your boards. There will be some chapters that you will find boring or difficult to study. You cannot obviously omit those chapters. Try to cover these chapters first and then do the easier ones. This will keep you stress-free during exam time. Also, take good care of your health. Eat healthy food and sleep for at least 8 hours daily. This will not only keep you healthy, but will also enhance your concentration.
  2. Have a good reference material at hand (CBSE Study Material/CBSE Study Notes) – These CBSE Study materials are available on the internet for free. You can keep these CBSE study notes to refer to while you are studying. Another good source of information is Toppers Notes. The information compiled in the study materials and toppers notes are up to date and accurate and prepared, keeping the CBSE syllabus in mind.
  3. Solve the CBSE Previous years question papers – After completing the syllabus, you should solve the CBSE Previous years question papers. Go through your answers after solving them and analyze your answers. This will be helpful in identifying the areas where you need to give special attention to. These will surely enable you to write your answers well on boards.
  4. Try solving the online test of physics class 12 – There are many class 12th practice test in physics available on the internet. You can solve these online tests of physics class 12 after you have solved all the previous year question papers. The questions available in these class 12th practice tests are prepared by experts in Physics according to the pattern of the question paper. These will help you increase your knowledge and confidence.

Here Are The Important Chapter-Wise Topics In Physics

Electrostatics

1: Electric Charges and Fields

  • Coulomb’s law in the vector form
  • 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 the calculation of the electric field.

2: Electrostatic Potential and Capacitance

  • Electric Potential due to a point charge.
  • Electric Potential on Axial Line & Equatorial Line of an Electric Dipole.
  • The capacitance of a parallel plate capacitor (with or without dielectric medium).
  • Energy stored in a capacitor.

Current Electricity

3: Current Electricity

  • The expression for drift velocity.
  • The relation between current and drift velocity.
  • Series and parallel connection of resistors
  • Kirchhoff’s laws and simple applications
  • Potentiometer.

Magnetic Effects of Current and Magnetism

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 the infinitely long straight wire; Straight and toroidal solenoids).
  • Force on a moving charge in uniform magnetic and electric fields (Numerical and Derivation)
  • Cyclotron
  • The Force on a current-carrying conductor in a uniform magnetic field
  • The force between two parallel current-carrying conductors
  • The torque experienced by a current loop in a uniform magnetic field.
  • Moving coil galvanometer-its current sensitivity and conversion to ammeter and voltmeter

5: Magnetism and Matter

  • A Current loop as a magnetic dipole and its magnetic dipole moment.
  • The magnetic dipole moment of an 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 ferromagnetic substances

Electromagnetic Induction and Alternating Current

6: Electromagnetic Induction

  • Motional EMF or Induced EMF
  • Mutual Induction and Self Induction.

7: Alternating Current

  • The relation between RMS and peak value of current & emf
  • Reactance, impedance & average power in series LCR, LR, CR or LR circuit
  • Resonance in series LCR circuit

8: Electromagnetic waves

  • Displacement current
  • Characteristics and Properties of EM Waves
  • Electromagnetic spectrum

Optics

9: Ray Optics and Optical Instruments

  • Total Internal Reflection
  • Mirror Formula
  • Lensmaker’s formula
  • Refraction and dispersion of light through a prism
  • Scattering of light
  • Microscopes and astronomical telescopes
  • Refractive Index of a Prism and Condition for Minimum Deviation

10: Wave Optics

  • Young’s double-slit experiment
  • Diffraction using single slit
  • Polarisation

Dual Nature of Radiation and Matter

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

Atoms and Nuclei

12: Atoms

  • Alpha-particle scattering experiment
  • Expression of radius
  • Bohr model, energy levels, hydrogen spectrum

13: Nuclei

  • N = N0 e‒λt
  • Mass defect
  • Binding energy per nucleon and its variation with mass
  • Nuclear fission & Nuclear fusion

 

Electronic Devices

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
  • Diode as a rectifier
  • Junction transistor: Common base transistor amplifier and Common emitter transistor amplifier