Physics | Class 9

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    Chapter 1 Physical Quantities and Measurements ( 31 videos)

      1.1: Physical and Non-Physical Quantities
      Introduction to Physics
    1. Introduction to Physics
      92679 views
      2. Physical Quantities
    2. Physical Quantities
      3. Problem on Physical Quantities
    3. Problem on Physical Quantities
      1.2: Base and Derived Physical Quantities
      Physical Quantities
    1. Physical Quantities
      2. Problem on Physical Quantities
    2. Problem on Physical Quantities
      1.3: International System of Units
      Physical Quantities
    1. Physical Quantities
      2. Scientific Notation and Prefixes
    2. Scientific Notation and Prefixes
      3. More on Scientific Notation and Prefixes
    3. More on Scientific Notation and Prefixes
      1.4: Scientific Notation
      Scientific Notation and Prefixes
    1. Scientific Notation and Prefixes
      2. More on Scientific Notation and Prefixes
    2. More on Scientific Notation and Prefixes
      3. Problem on Scientific Notation
    3. Problem on Scientific Notation
      3140 views
      1.5: Length Measuring Instruments
      Measuring with Meter Rule and Measuring Tape
    1. Measuring with Meter Rule and Measuring Tape
      5195 views
      2. Introduction to Vernier Calipers
    2. Introduction to Vernier Calipers
      3. Measuring with Vernier Calipers
    3. Measuring with Vernier Calipers
      4. Introduction to Screw Gauge
    4. Introduction to Screw Gauge
      5. Measuring with Screw Gauge
    5. Measuring with Screw Gauge
      1.6: Mass Measuring Instruments
      Mass Measuring by Physical Balance
    1. Mass Measuring by Physical Balance
      5353 views
      2. Electronic Balance
    2. Electronic Balance
      2439 views
      1.7: Time Measuring Instruments
      Measuring Time by Stopwatch
    1. Measuring Time by Stopwatch
      3452 views
      1.8: Volume Measuring Instruments
      Measuring Volume by Cylinder
    1. Measuring Volume by Cylinder
      1.9: Errors in Measurements
      Errors and Uncertainties
    1. Errors and Uncertainties
      1.10: Uncertainity in a Measurement
      More on Errors and Uncertainties
    1. More on Errors and Uncertainties
      1.11: Significant Figures
      Introduction to Significant Figures
    1. Introduction to Significant Figures
      21944 views
      2. Problem on Rules to Find the Significant Digits in a Measurement
    2. Problem on Rules to Find the Significant Digits in a Measurement
      1516 views
      1.12: Precision and Accuracy
      Precision and Accuracy
    1. Precision and Accuracy
      1.13: Rounding Off the Digits
      Rounding Off the Numbers
    1. Rounding Off the Numbers
      6227 views
      1.14: Additional Problems
      Problem on Rounding Off the Numbers
    1. Problem on Rounding Off the Numbers
      1846 views
      2. Problem on Physical Quantities
    2. Problem on Physical Quantities
      3. Problem on Units of Physical Quantities
    3. Problem on Units of Physical Quantities
      4. Problem on Scientific Notation and Prefixes
    4. Problem on Scientific Notation and Prefixes
      5. Problem on Conversion of Units Using Prefixes
    5. Problem on Conversion of Units Using Prefixes

    Chapter 2 Kinematics ( 31 videos)

      2.1: Scalars and Vectors
      Introduction to Mechanics
    1. Introduction to Mechanics
      9874 views
      2. Scalars and Vectors
    2. Scalars and Vectors
      29558 views
      3. Vector Addition and Subtraction
    3. Vector Addition and Subtraction
      20633 views
      4. Problem on Vector Addition and Subtraction
    4. Problem on Vector Addition and Subtraction
      2.2: Rest and Motion
      Rest and Motion
    1. Rest and Motion
      9991 views
      2.3: Types of Motion
      Translatory Motion
    1. Translatory Motion
      11281 views
      2.4: Distance and Displacement
      Position of an Object
    1. Position of an Object
      2. Difference Between Distance and Displacement
    2. Difference Between Distance and Displacement
      21168 views
      2.5: Speed and Velocity
      Introduction to Speed
    1. Introduction to Speed
      2. Introduction to Velocity
    2. Introduction to Velocity
      18502 views
      2.6: Acceleration
      Introduction to Acceleration
    1. Introduction to Acceleration
      12317 views
      2.7: Graphical Analysis of Motion
      Graphical Analysis of Motion
    1. Graphical Analysis of Motion
      5191 views
      2.8: Gradient of a Distance-Time Graph
      Graphical Analysis of Motion
    1. Graphical Analysis of Motion
      5191 views
      2.9: Speed-Time Graph
      Speed - Time Graph
    1. Speed - Time Graph
      11825 views
      2.10: Gradient of a Speed-Time Graph
      Speed - Time Graph
    1. Speed - Time Graph
      11825 views
      2.11: Area Under Speed-Time Graph
      Speed - Time Graph
    1. Speed - Time Graph
      11825 views
      2.12: Solving Problem for Motion Under Gravity
      No vidoes available yet. Still under development.
      2.13: Free Fall Acceleration
      Motion of Freely Falling Bodies
    1. Motion of Freely Falling Bodies
      6030 views
      2. Problem on Motion of Freely Falling Bodies
    2. Problem on Motion of Freely Falling Bodies
      2614 views
      2.14: Additional Problems
      Problem on Rest and Motion
    1. Problem on Rest and Motion
      2. Problem on Types of Motion
    2. Problem on Types of Motion
      3. Problem 1 on Distance and Displacement
    3. Problem 1 on Distance and Displacement
      4. Problem 2 on Distance and Displacement
    4. Problem 2 on Distance and Displacement
      5. Problem on Speed
    5. Problem on Speed
      6. Problem on Velocity
    6. Problem on Velocity
      7. Problem on Speed and Velocity
    7. Problem on Speed and Velocity
      8. Problem 1 on Acceleration
    8. Problem 1 on Acceleration
      9. Problem 2 on Acceleration
    9. Problem 2 on Acceleration
      10. Problem on Graphical Representation of Motion
    10. Problem on Graphical Representation of Motion
      11. Problem on Speed-Time Graph
    11. Problem on Speed-Time Graph
      12. Problem 1 on Free Falling Motion
    12. Problem 1 on Free Falling Motion
      13. Problem 2 on Free Falling Motion
    13. Problem 2 on Free Falling Motion

    Chapter 3 Dynamics ( 26 videos)

      3.1: Concept of Force
      Introduction to Mechanics
    1. Introduction to Mechanics
      9874 views
      2. Introduction to Force
    2. Introduction to Force
      9713 views
      3.2: Fundamental Forces
      Basic Forces of Nature
    1. Basic Forces of Nature
      3.3: Forces in a Free-Body Diagram
      Free Body Diagram
    1. Free Body Diagram
      3.4: Newton's Laws of Motion
      First Law of Newton
    1. First Law of Newton
      15598 views
      2. Second Law of Newton
    2. Second Law of Newton
      12126 views
      3. Problem on Second Law of Newton
    3. Problem on Second Law of Newton
      5721 views
      4. Third Law of Newton
    4. Third Law of Newton
      8817 views
      3.5: Limitations of Newton's Laws of Motion
      Limitation of Newton's Law of Motion
    1. Limitation of Newton's Law of Motion
      3.6: Mass and Weight
      Difference Between Mass and Weight
    1. Difference Between Mass and Weight
      8574 views
      3.7: Mechanical and Electronic Balance
      Mass Measuring by Physical Balance
    1. Mass Measuring by Physical Balance
      5353 views
      2. Electronic Balance
    2. Electronic Balance
      2439 views
      3.8: Friction
      Introduction to Friction
    1. Introduction to Friction
      7683 views
      2. Advantages and Disadvantages of Friction
    2. Advantages and Disadvantages of Friction
      3. Rolling Friction
    3. Rolling Friction
      6552 views
      4. Static and Kinetic Friction
    4. Static and Kinetic Friction
      5. Terminal Velocity
    5. Terminal Velocity
      3853 views
      6. Methods of Reducing Friction
    6. Methods of Reducing Friction
      3.9: Momentum and Impulse
      Introduction to Momentum
    1. Introduction to Momentum
      2. Momentum and Newton's Second Law of motion
    2. Momentum and Newton's Second Law of motion
      6044 views
      3. Impulse
    3. Impulse
      4. Problem on Impulse
    4. Problem on Impulse
      3.10: Principle of Conservation of Momentum
      Law of Conservation of Momentum
    1. Law of Conservation of Momentum
      2. Applications of Conservation of Momentum
    2. Applications of Conservation of Momentum
      3. Problem1-Law of Conservation of Momentum
    3. Problem1-Law of Conservation of Momentum
      3507 views
      4. Problem2-Law of Conservation of Momentum
    4. Problem2-Law of Conservation of Momentum
      2524 views

    Chapter 4 Turning Effects of Forces ( 28 videos)

      4.1: Like and Unlike Parallel Forces
      Like and Unlike Parallel Forces
    1. Like and Unlike Parallel Forces
      10549 views
      4.2: Addition of Forces
      Vector Addition and Subtraction
    1. Vector Addition and Subtraction
      20633 views
      2. Problem on Vector Addition and Subtraction
    2. Problem on Vector Addition and Subtraction
      3. Problem2 on Vector Addition and Subtraction
    3. Problem2 on Vector Addition and Subtraction
      9509 views
      4.3: Turning Effect of a Force
      Rigid Body
    1. Rigid Body
      2. Axis of Rotation
    2. Axis of Rotation
      3. Introduction to Torque or Moment of a Force
    3. Introduction to Torque or Moment of a Force
      7117 views
      4. Problem on Introduction to Torque or Moment of a Force
    4. Problem on Introduction to Torque or Moment of a Force
      2401 views
      5. Introduction to Couple
    5. Introduction to Couple
      4417 views
      4.4: Resolution of Forces
      Resolution of Vector
    1. Resolution of Vector
      3468 views
      4.5: Determination of a Force from its Perpendicular Components
      Resolution of Vector
    1. Resolution of Vector
      3468 views
      2. Problem on Resolution of Forces
    2. Problem on Resolution of Forces
      2100 views
      4.6: Principle of Moments
      Principle of Moments
    1. Principle of Moments
      5078 views
      2. Problem on Principle of Moments
    2. Problem on Principle of Moments
      4.7: Centre of Gravity and Centre of Mass
      Center of Gravity
    1. Center of Gravity
      5470 views
      2. Center of Mass
    2. Center of Mass
      4835 views
      4.8: Equilibrium
      Introduction to Equilibrium
    1. Introduction to Equilibrium
      11700 views
      4.9: Conditions of Equilibrium
      Introduction to Equilibrium
    1. Introduction to Equilibrium
      11700 views
      2. Problem 1 on Conditions for Equilibrium
    2. Problem 1 on Conditions for Equilibrium
      6138 views
      3. Problem 2 on Conditions for Equilibrium
    3. Problem 2 on Conditions for Equilibrium
      4659 views
      4. Problem 3 on Conditions for Equilibrium
    4. Problem 3 on Conditions for Equilibrium
      4057 views
      5. Problem 4 on Conditions for Equilibrium
    5. Problem 4 on Conditions for Equilibrium
      4589 views
      4.10: States of Equilibrium
      States of Equilibrium
    1. States of Equilibrium
      4928 views
      4.11: Improvement of Stability
      Center of Gravity
    1. Center of Gravity
      5470 views
      4.12: Centripetal Force
      Uniform Circular Motion
    1. Uniform Circular Motion
      2. Centripetal and Centrifugal Force
    2. Centripetal and Centrifugal Force
      7101 views
      3. Applications of Centripetal Force
    3. Applications of Centripetal Force
      4. More on Applications of Centripetal Force
    4. More on Applications of Centripetal Force
      2265 views

    Chapter 5 Work, Energy and Power ( 18 videos)

      5.1: Work
      Introduction to Work
    1. Introduction to Work
      9168 views
      2. Problem on Work Done by a Variable Force
    2. Problem on Work Done by a Variable Force
      4822 views
      5.2: Energy
      Energy and its Forms
    1. Energy and its Forms
      2. Kinetic Energy and its Derivation
    2. Kinetic Energy and its Derivation
      3. Problem on Kinetic Energy
    3. Problem on Kinetic Energy
      3002 views
      4. Potential Energy
    4. Potential Energy
      7324 views
      5. Problem on Potential Energy
    5. Problem on Potential Energy
      1338 views
      5.3: Conservation of Energy
      Law of Conservation of Energy
    1. Law of Conservation of Energy
      2. Interconversion of Kinetic and Potential Energy
    2. Interconversion of Kinetic and Potential Energy
      3. More on Interconversion of Kinetic and Potential Energy
    3. More on Interconversion of Kinetic and Potential Energy
      5.4: Sources of Energy
      Renewable Sources and Non-Renewable Energy Sources
    1. Renewable Sources and Non-Renewable Energy Sources
      5.5: Renewable Sources and Non-Renewable Sources
      Renewable Sources and Non-Renewable Energy Sources
    1. Renewable Sources and Non-Renewable Energy Sources
      5.6: The Advantages and Disadvantages of Methods of Energy Production
      Hydroelectric and Wind Power Station
    1. Hydroelectric and Wind Power Station
      5.7: Power
      Introduction to Power
    1. Introduction to Power
      7657 views
      2. Problem on Introduction to Power
    2. Problem on Introduction to Power
      1590 views
      5.8: Efficiency
      Introduction to Efficiency
    1. Introduction to Efficiency
      2503 views
      2. Problem on Introduction to Efficiency
    2. Problem on Introduction to Efficiency
      302 views
      3. Why Perpetual Energy Machines do not Work?
    3. Why Perpetual Energy Machines do not Work?

    Chapter 6 Mechanical Properties of Matter ( 19 videos)

      6.1: Deformation of Solids
      Deformation in Solids
    1. Deformation in Solids
      6.2: Hooke's Law
      Hooke's Law
    1. Hooke's Law
      6732 views
      2. Problem on Hooke's Law
    2. Problem on Hooke's Law
      1357 views
      3. Applications of Hooke's Law
    3. Applications of Hooke's Law
      6.3: Density
      Introduction to Density
    1. Introduction to Density
      3922 views
      2. Problem1 on Introduction to Density
    2. Problem1 on Introduction to Density
      1447 views
      3. Problem2 on Introduction to Density
    3. Problem2 on Introduction to Density
      1152 views
      4. Problem3 on Introduction to Density
    4. Problem3 on Introduction to Density
      1013 views
      5. Measuring Densities of Different Substances
    5. Measuring Densities of Different Substances
      6.4: Pressure
      Introduction to Pressure
    1. Introduction to Pressure
      4202 views
      2. Problem on Introduction to Pressure
    2. Problem on Introduction to Pressure
      1655 views
      6.5: Pressure in Liquids
      Pressure in Liquids
    1. Pressure in Liquids
      2. Problem on Pressure in Liquids
    2. Problem on Pressure in Liquids
      6.6: Atmospheric Pressure
      Atmospheric Pressure
    1. Atmospheric Pressure
      6129 views
      6.7: Measurement of Atmospheric Pressure
      Atmospheric Pressure
    1. Atmospheric Pressure
      6129 views
      6.8: Measurement of Pressure by Manometer
      Measuring Gas Pressure Using Manometer
    1. Measuring Gas Pressure Using Manometer
      6.9: Pascal's Law
      Pascal’s Law
    1. Pascal’s Law
      4297 views
      2. Problem on Hydraulic Press
    2. Problem on Hydraulic Press
      1622 views
      3. How Braking System in Vehicles Work?
    3. How Braking System in Vehicles Work?

    Chapter 7 Thermal Properties of Matter ( 12 videos)

      7.1: Kinetic Molecular Theory of Matter
      Kinetic Molecular Model of Matter
    1. Kinetic Molecular Model of Matter
      4757 views
      2. States of Matter
    2. States of Matter
      3. More on States of Matter
    3. More on States of Matter
      7.2: Temperature and Heat
      Temperature and Heat
    1. Temperature and Heat
      2. Internal Energy and Heat
    2. Internal Energy and Heat
      7.3: Thermometers
      Introduction to Thermometer
    1. Introduction to Thermometer
      2. Thermometric Properties
    2. Thermometric Properties
      3. Scales of Temperature
    3. Scales of Temperature
      4. More on Scales of Temperature
    4. More on Scales of Temperature
      5. Thermocouple Thermometers
    5. Thermocouple Thermometers
      7.4: Sensitivity, Range and Linearity of Thermometers
      Introduction to Thermometer
    1. Introduction to Thermometer
      7.5: Structure of a Liquid-in-Glass Thermometer
      Introduction to Thermometer
    1. Introduction to Thermometer

    Chapter 8 Magnetism ( 18 videos)

      8.1: Magnetic Materials
      Magnetic Materials and Their Properties
    1. Magnetic Materials and Their Properties
      8.2: Properties of Magnets
      Magnetic Materials and Their Properties
    1. Magnetic Materials and Their Properties
      8.3: Induced Magnetism
      Magnetization and Demagnetization of a Magnet
    1. Magnetization and Demagnetization of a Magnet
      8.4: Temporary and Permanent Magnets
      Soft and Hard Magnetic Materials
    1. Soft and Hard Magnetic Materials
      8.5: Magnetic Fields
      Magnetic Materials and Their Properties
    1. Magnetic Materials and Their Properties
      8.6: Uses of Permanent Magnets
      Electricity Generator
    1. Electricity Generator
      2. Applications of Electromagnet: Electric Bell and Speaker
    2. Applications of Electromagnet: Electric Bell and Speaker
      8.7: Electromagnets
      Applications of Electromagnet
    1. Applications of Electromagnet
      2. Telephone and its Working
    2. Telephone and its Working
      3. Electromagne and its Uses
    3. Electromagne and its Uses
      8.8: Domain Theory of Magnetism
      Introduction to Magnetic Poles
    1. Introduction to Magnetic Poles
      2. Theory of Magnetism
    2. Theory of Magnetism
      3. Types of Magnetic Materials
    3. Types of Magnetic Materials
      8.9: Magnetisation and Demagnetisation
      Magnetization and Demagnetization of a Magnet
    1. Magnetization and Demagnetization of a Magnet
      2. How to Demagnetize a Magnet?
    2. How to Demagnetize a Magnet?
      8.10: Applications of Magnets in Recording Technology
      Applications of Magnets in Recording Technology
    1. Applications of Magnets in Recording Technology
      2. Application of Magnet in Recording Technology: Hard Disk Recording
    2. Application of Magnet in Recording Technology: Hard Disk Recording
      8.11: Soft Iron as Magnetic Shield
      Magnetic Shielding
    1. Magnetic Shielding

    Chapter 9 Nature of Science ( 7 videos)

      9.1: Scope of Physics
      Introduction to Physics
    1. Introduction to Physics
      92679 views
      9.2: Branches of Physics
      Branches of Physics
    1. Branches of Physics
      30872 views
      2. More on Branches of Physics
    2. More on Branches of Physics
      15130 views
      9.3: Interdisciplinary Nature of Physics
      Branches of Physics
    1. Branches of Physics
      30872 views
      2. More on Branches of Physics
    2. More on Branches of Physics
      15130 views
      9.4: Scientific Method
      Scientific Method
    1. Scientific Method
      4077 views
      9.5: Scientific Base of Technologies and Engineering
      Difference between Science, Technology and Engineering
    1. Difference between Science, Technology and Engineering