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  PHYSICS CLASS-12 CBSE/ICSE/IB BOARD/BSEB (Bihar Board )/IIT-JEE/NEET LECTURE - 02 INTRODUCTION TO LIGHT BASICS OF OPTICS RAY OPTICS : Optics : 1. Optics : Definition of optics 2. Branches of optics 3. Ray Optics or Geometrical Optics 4. Wave Optics or Physical Optics Ray Optics : 1. Sources of light 2. Ray 3. Beam of light 4.Divergent beam of light 5. Parallel beam of light 6. Convergent beam of light 7. Rectilinear propagation of light 8.Shadow 9. Umbra 10. Penumbra 11. Eclipses : Solar eclipse and Lunar eclipse 12. Classification of substances :        (a) Transparent body         (b) Translucent body          (c) Opaque Photometry : 1. Photometry 2.Photometer :Optical bench 3.Luminous flux 4. Luminous Intensity 5. Illuminance 6. Inverse square law 7. Luminous efficiency 8.Lambert Cosine Law 9. Principle of photometer 10. BUNSEN'S GREASE...

  PHYSICS CLASS-12 CBSE/ICSE/IB BOARD/BSEB (Bihar Board)/IIT-JEE/NEET LECTURE-20 CHAPTER : MAGNETIC EFFECT OF  CURRENT AND MOTION OF CHARGED                                                      PARTICLES CYCLOTRON : 1. Introduction 2. Principle 3. Well labelled diagram 4. Construction 5. Working 6. Theory 7. Limitations 8. Uses NOTE : Write your answer as I have written in my lecture and get marks 5/5. By S.N. Choudhary Website : www.snphysicsexpert.com Blog : https://snphysicsexpert.blogspot.com Facebook page : https://www.facebook.com/snphysicsexpert Facebook : https://www.facebook.com/shivanand.chaudhary.5 Instagram : https://www.instagram.com/shivanand.chaudhary.5 Twitter : https://twitter.co...

  PHYSICS CLASS-12 CBSE/ICSE/IB BOARD/BSEB (Bihar Board )/IIT-JEE/NEET LECTURE-19 CHAPTER : MAGNETIC EFFECT OF CURRENT TOPICS : SHUNT, AMMETER   & VOLTMETER : SHUNT : 1. Definition of shunt 2. Circuit diagram 3. Expression for shunt current 4.Expression for galvanometer current 5.Expression of for shunt resistance 6. Uses of shunt AMMETER : 1. Introduction : What is ammeter ? 2. Circuit diagram 3. Figure of merit 4. Conversion of galvanometer into ammeter 5. Expression for shunt resistance to convert galvanometer into ammeter 6. How to increase range of ammeter 7. Resistance of an ideal ammeter 8. How to connect ammeter into a circuit 9. Uses VOLTMETER 1. Introduction : What is voltmeter ? 2. Circuit diagram 3. Figure of merit 4. Conversion of galvanometer into voltmeter 5. Expression for  resistance to convert galvanometer into voltmeter 6. How to increase range of voltmeter 7. Resistance of an ideal voltmeter 8. How to connect ...

  PHYSICS CLASS-12 CBSE/ICSE/BSEB (Bihar board)/ IB BOARD/IIT-JEE/NEET OPTICS INTRODUCTION TO LIGHT and ITS PROPERTIES : 1.Introduction: (a) Definition of light (b) Light is an EM Wave (c) Light is transverse wave 2. Properties of light 3. Theories of light / Prominent theories of light : (a) Newton's Corpuscular Theory of light (b) Huyghen's Wave Theory of Light (c) Planck's Quantum Theory of Light (d) de Broglie's Dual Theory BY SHIVANAND CHOUDHARY Website: www.snphysicsexpert.com Facebook Page :https:// www.facebook.com/snphysicsexpert Blog : https://snphysicsexpert.blogspot.com Facbook: https://www.facebook.com/shivanand.chaudhary.5 INSTAGRAM: https://www.instagram.com/shivanand.chaudhary.5 TWITTER: https://www.twitter.com/snchaudhary2014 LinkedIn : B.D.GURUKUL RISHI NAGAR , RANIBAGH, DELHI-34, INDIA GOOGLE PAGE: https://g.page/bdgurukul YOUTUBE CHANNEL : https://www.youtube.com/c/BDGURUKUL #introductiontolight #optics #class12physics ...

  PHYSICS CLASS-11 CBSE/ICSE/IB BOARD/BSEB (BIHAR BOARD)/IIT-JEE/NEET LECTURE-02 CHAPTER : NEWTON'S LAWS OF MOTION AND FRICTION : NEWTON'S SECOND LAW OF MOTION :  1.Statement of Newton's of second law of motion 2,Measurement of force 3.Derivation of F =ma by Calculus method                      4.Principle of physical independence of forces By Shivanand Choudhary Website: www.snphysicsexpert.com Blogger site; https://snphysicsexpert.blogspot.com Facebook page :www.facebook.com/snphysicsexpert Facebook : www.facebook.com/shivanand.chaudhary.5 Instagram : www.instagram.com/shivanand.chaudhary.5 Twitter :  www.twitter.com/snchaudhary2014 VISIT : JUST DIAL AND LinkedIn B.D.GURUKUL Google page : https://g.page/bdgurukul YOUTUBE CHANNEL : https://www.youtube.com/c/BDGURUKUL #bdgurukul #BDGurukul #BDGURUKUL #snphysicsexpert #Newton's second la of mo...

  PHYSICS CLASS-11 CBSE/ICSE/BSEB(BIHAR BOARD)/IB BOARD/IIT-JEE/NEET LECTURE-1 CHAPTER : NEWTON'S LAWS OF MOTION FORCE: 1.Definition of force 2.Expression for force 3.SI Unit of force 4.Is force scalar or vector? 5.Effect of force 6. Measurement of force 7. Other units of force 8.Dimensional formula of force INERTIA : 1.Definition of inertia 2.Principle of inertia 3.Kinds of inertia 4.Inertia of rest 5.Inertia of motion 6.Inertia of direction 7.Measurement of inertia 8.Is inertia scalar or vector? MOMENTUM: 1.Definition of momentum 2.Measurement of momentum 3.Expression for momentum 4.Is momentum scalar or vector ? 5.SI Unit of momentum 6.Dimensional formula of momentum 7.Graph on momentum BY SHIVANAND CHOUDHARY www.snphysicsexpert.com https://snphysicsexpert.blogspot.com www.facebook.com/snphysicsexpert www.twitter.com/snchaudhary2014 www.facebook.com/shivanand.chaudhary.5 www.instagram.com/shivanand.chaudhary.5 B.D.GURUKUL RISHI NAGAR, RANIB...

  PHYSICS CLASS-12 CBSE/JEE-IIT/NEET/BSEB (BIHAR BOARD ) LECTURE-5 NCERT CHAPTER-3 CURRENT ELECTRICITY ( CONTINUED ) METER BRIDGE / SLIDE WIRE METER BRIDGE : Meter bridge :                                   Introduction of meter bridge ;                 Principle of meter bridge,                              An application Wheatstone bridge principle ; Circuit diagram of meter bridge ; Construction of meter bridge ;                 Working and theory of meter bridge ; Precautions ;                                                    uses of meter bridge. BY SHIVANAND CHOUDHARY www.snphysicsexpert...

  PHYSICS CLASS-12 CBSE/ICSE/BSEB(BIHAR BOARD)/IB BOARD/IIT-JEE/NEET LECTURE-17 CHAPTER : CURRENT ELECTRICITY GROUPING OF CELLS IN SERIES/PARALLEL/MIXED                                                OR COMBINATION OF CELLS IN SERIES/ PARALLEL / MIXED : COMPLETE SYLLABUS FOR CLASS-12 : Grouping of cells: 1.Definition 2. Need of grouping 3.Kinds of grouping Grouping of cells in series: 1. Definition 2.Need of grouping of cells in series 3.Circuit diagram 4.Equivalent emf 5.Equivalent/ total resistance of the circuit 6.Derivation of an expression for current 7.Uses of grouping of cells in series 8.Special cases 9. Condition for usefulness Grouping of cells in parallel : 1. Definition 2.Need of grouping of cells in parallel 3.Circuit...

  A very important topic for the board exam Introduction Principle Construction Working and theory Uses Current sensitiveness Voltage sensitiveness Condition for PHYSICS  CLASS-12 CBSE/ICSE/BSEB(BIHAR BOARD)/IIT-JEE/NEET LECTURE-18 CHAPTER : MAGNETIC EFFECT OF CURRENT GALVANOMETER ON YOUR TIPS : GALVANOMETER : Introduction, Principle, Well labelled diagram, Construction, Working, Theory, Uses. Current sensitiveness: Voltage sensitiveness: Condition for sensitive Galvanometer . BY SHIVANAND CHOUDHARY www.snphysicsexpert.com https://sncphysicsexpert.blogspot.com https://www.facebook,com/snphysicsexpert https://www.facebook.com/shivanand.chaudhary.5 https:www.instagram.com/shivanand.chaudhary.5 #bdgurukul #snphysicsexpert #galvanometerclass12 #galvanometer #principleofgalvanometer #workingofgalvanometer #usesofgalvanometer #currentsensitivenessofgalvanometer #voltagesensitivityofgalvanometer B.D.GURUKUL https://g.page/bdgurukul https://www.youtub...

  PHYSICS CLASS-12 CBSE/ICSE/BSEB((BIHAR BOARD)/IIT-JEE/NEET LECTURE-16 CHAPTER-CURRENT ELECTRICITY POTENTIOMETER  ON YOUR TIPS: Potentiometer :                             Introduction,                              Principle                               Explanation/ derivation of principle,                               Working and Theory of potentiometer :         ...

 PHYSICS CLASS-12 CBSE/ICSE/IB BOARD/BSEB(BIHAR BOARD)/IIT-JEE/NEET LECTURE-12 CHAPTER: MAGNETIC EFFECT OF CURRENT MOTION OF A CHARGED PARTICLE IN A UNIFORM MAGNETIC FIELD : Motion of a charged particle in a uniform magnetic field 1. Lorentz magnetic force 2.Trajectory of charged particle                                                                                                  3.Three cases arise : (a)when charged particle is moving along the direction of magnetic field i.e. angle between velocity and magnetic field is zero (i) Expression for Lorentz force (ii)Trajectory of particle   (b)When charged particle is moving perpendicular to the direction of magnetic field          i.e. the angle between veloci...

  PHYSICS CLASS-12 CBSE / JEE-IIT / NEET / BSEB ( BIHAR BOARD ) LECTURE-4 CURRENT ELECTRICITY ( CONTINUED ) WHEATSTONE BRIDGE PRINCIPLE : Wheatstone bridge principle ,           Definition of bridge ,.                              Statement of principle ,.                             Proof ,                                                                   Circuit diagram ,                                           Uses ,                              ...

 

 

  PHYSICS CLASS-12 CBSE/JEE/NEET/BSEB( BIHAR BOARD ) LECTURE -3 NCERT CHAPTER-3 CURRENT ELECTRICITY : ELECTRIC MEASUREMENT: KIRCHHOFF'S CURRENT LAW                      AND  KIRCHHO'S VOLTAGE LAW : Kirchhoff's laws of electric measurement : Kirchhoff's current law ( KCL)/ Kirchhoff's junction law / Kirchhoff's first law :  Statement ; definition of KCL  ;Mathematical formula ;         Explanation of Kirchhoff's current law ;  Example of KCL ;.           Importance  / Significance of KCL;  Numerical based on KCL ;           Sign convention. Kirchhoff's Second Law or Kirchhoff's Loop Law or Kirchhoff's Voltage Law ( K V L ) :.                                                    St...

 

 

  PHYSICS CLASS-12 CBSE/ICSE/IIT-JEE/NEET/BSEB( BIHAR BOARD) LECTURE-13 CURRENT ELECTRICITY RELATION BETWEEN ELECTRIC CURRENT AND DRIFT VELOCITY/ DEDUCTION OF OHM'S LAW/ RESISTANCE/ RESISTIVITY/ CONDUCTANCE/ CONDUCTIVITY : Derivation of an expression for relation between current and drift velocity, Derivation of expression for resistance, Derivation of expression of resistivity, Derivation of expression of conductance, Derivation of expression of conductivity. BY SHIVANAND CHOUDHARY www.snphysicsexpert.com B.D.GURUKUL RISHI NAGAR, RANIBAGH,DELHI-34, INDIA https://g.page/BDGurukul https://youtube.com/c/BDGURUKUL https://www.facebook.com/shivanand.chaudhary.5 https://www.facebook.com/snphysicsexpert https://snphysicsexpert.blogspot.com https://www.instagram.com/shivanand.chaudhary.5 https://www.linkedin.com/in/shivanand-chaudhary-7061028b

 

 

  PHYSICS CLASS-12 CBSE BOARD/ICSE BOARD/BSEB (BIHAR BOARD )/IIT-JEE/NEET(MED. ) LECTURE-5 CHAPTER : ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT: INTRODUCTION TO ALTERNATING CURRENT / ALTERNATING EMF / CIRCUIT ELEMENTS OF ALTERNATING CURRENT : Introduction to alternating current :                                                                                                          Definition of alternating current, Mathematical expression for altern...