Physics | Class 9

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    Chapter 1 Physical Quantities and Measurement ( 35 videos)  (Practice Test)

      1.1: Introduction to Physics
      Introduction to Physics
    1. Introduction to Physics
      92679 views
      2. Branches of Physics
    2. Branches of Physics
      30872 views
      3. More on Branches of Physics
    3. More on Branches of Physics
      15130 views
      1.2: Physical Quantities (Practice Test)
      Physical Quantities
    1. Physical Quantities
      56493 views
      2. Problem on Physical Quantities
    2. Problem on Physical Quantities
      24852 views
      1.3: International System of Units (Practice Test)
      International Systems of Base Units
    1. International Systems of Base Units
      29680 views
      2. Standard of Length-Meter
    2. Standard of Length-Meter
      6721 views
      3. Standard of Time-Second
    3. Standard of Time-Second
      5294 views
      4. Standard of Mass-Kilogram
    4. Standard of Mass-Kilogram
      4359 views
      1.4: Prefixes
      Introduction to Prefixes
    1. Introduction to Prefixes
      10268 views
      2. Problem on Introduction to Prefixes
    2. Problem on Introduction to Prefixes
      4804 views
      1.5: Scientific Notation (Practice Test)
      Scientific Notation
    1. Scientific Notation
      14752 views
      2. Problem on Scientific Notation
    2. Problem on Scientific Notation
      3140 views
      1.6: Measuring Instruments (Practice Test)
      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
      8542 views
      3. Measuring with Vernier Calipers
    3. Measuring with Vernier Calipers
      8894 views
      4. problem on Measuring with Vernier Calipers
    4. problem on Measuring with Vernier Calipers
      4149 views
      5. Introduction to Screw Gauge
    5. Introduction to Screw Gauge
      5842 views
      6. Measuring with Screw Gauge
    6. Measuring with Screw Gauge
      15856 views
      7. Problem on Measuring with Screw Gauge
    7. Problem on Measuring with Screw Gauge
      2307 views
      8. Mass Measuring by Physical Balance
    8. Mass Measuring by Physical Balance
      5353 views
      9. Mass Measuring by Lever Balance
    9. Mass Measuring by Lever Balance
      3178 views
      10. Electronic Balance
    10. Electronic Balance
      2439 views
      11. Measuring Time by Stopwatch
    11. Measuring Time by Stopwatch
      3452 views
      12. Measuring Volume by Cylinder
    12. Measuring Volume by Cylinder
      3068 views
      13. Measuring Volume of Irregular Shaped Solid
    13. Measuring Volume of Irregular Shaped Solid
      2312 views
      14. Laboratory Safety
    14. Laboratory Safety
      1203 views
      1.7: Significant Figures (Practice Test)
      Introduction to Significant Figures
    1. Introduction to Significant Figures
      21944 views
      2. Problem on Introduction to Significant Figures
    2. Problem on Introduction to Significant Figures
      2408 views
      3. Problem on Rules to Find the Significant Digits in a Measurement
    3. Problem on Rules to Find the Significant Digits in a Measurement
      1516 views
      4. Zero as Significant Figure
    4. Zero as Significant Figure
      1893 views
      5. Calculation of Significant Figures in Arithmetic Operations
    5. Calculation of Significant Figures in Arithmetic Operations
      2612 views
      6. Problem on Multiplication and Division with Significant Figures
    6. Problem on Multiplication and Division with Significant Figures
      1826 views
      7. Rounding Off the Numbers
    7. Rounding Off the Numbers
      6227 views
      8. Problem on Rounding Off the Numbers
    8. Problem on Rounding Off the Numbers
      1846 views

    Chapter 2 Kinematics ( 25 videos)  (Practice Test)

      2.1: Rest and Motion
      Introduction to Mechanics
    1. Introduction to Mechanics
      9874 views
      2.2: Types of Motion
      Types of Motion
    1. Types of Motion
      11281 views
      2.3: Scalars and Vectors
      Scalars and Vectors Quantities
    1. Scalars and Vectors Quantities
      29558 views
      2. Problem on Representation of Vectors
    2. Problem on Representation of Vectors
      3160 views
      2.4: Terms Associated with Motion (Practice Test)
      Position of an Object
    1. Position of an Object
      4219 views
      2. Difference Between Distance and Displacement
    2. Difference Between Distance and Displacement
      21168 views
      3. Introduction to Speed
    3. Introduction to Speed
      4561 views
      4. Problem on Introduction to Speed
    4. Problem on Introduction to Speed
      2531 views
      5. Introduction to Velocity
    5. Introduction to Velocity
      18502 views
      6. Problem on Introduction to Velocity
    6. Problem on Introduction to Velocity
      9471 views
      7. Difference Between Uniform Speed and Uniform Velocity
    7. Difference Between Uniform Speed and Uniform Velocity
      4271 views
      8. Introduction to Acceleration
    8. Introduction to Acceleration
      12317 views
      9. Problem on Introduction to Acceleration
    9. Problem on Introduction to Acceleration
      6449 views
      2.5: Graphical Analysis of Motion
      Graphical Analysis of Motion
    1. Graphical Analysis of Motion
      5191 views
      2. Problem on Distance-Time Graph
    2. Problem on Distance-Time Graph
      2818 views
      3. Speed-Time Graph
    3. Speed-Time Graph
      11825 views
      4. Problem on Speed-Time Graph
    4. Problem on Speed-Time Graph
      5822 views
      2.6: Equations of Motion
      Equations of Motion
    1. Equations of Motion
      15262 views
      2. Problem on First Equation of Motion
    2. Problem on First Equation of Motion
      3441 views
      3. Second Equation of Motion
    3. Second Equation of Motion
      7987 views
      4. Problem on Second Equation of Motion
    4. Problem on Second Equation of Motion
      2364 views
      5. Third Equation of Motion
    5. Third Equation of Motion
      8054 views
      6. Problem on Third Equation of Motion
    6. Problem on Third Equation of Motion
      2078 views
      2.7: Motion of Freely Falling Bodies
      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

    Chapter 3 Dynamics ( 27 videos)  (Practice Test)

      3.1: Force, Inertia and Momentum
      Introduction to Force
    1. Introduction to Force
      9713 views
      2. Introduction to Momentum
    2. Introduction to Momentum
      7422 views
      3. Problem on Introduction to Momentum
    3. Problem on Introduction to Momentum
      2543 views
      3.2: Newton's Laws of Motion (Practice Test)
      Newton's First Law of Motion
    1. Newton's First Law of Motion
      15598 views
      2. Newton's Second Law of Motion
    2. Newton's Second Law of Motion
      12126 views
      3. Problem on Newton's Second Law of Motion
    3. Problem on Newton's Second Law of Motion
      5721 views
      4. Difference Between Mass and Weight
    4. Difference Between Mass and Weight
      8574 views
      5. Newton's Third Law of Motion
    5. Newton's Third Law of Motion
      8817 views
      6. Tension in a String
    6. Tension in a String
      7. Atwood Machine: Case A
    7. Atwood Machine: Case A
      13050 views
      8. More on Atwood Machine: Case A
    8. More on Atwood Machine: Case A
      9. newton's Second Law of motion for Changing Mass
    9. newton's Second Law of motion for Changing Mass
      3512 views
      10. Atwood Machine: Case B
    10. Atwood Machine: Case B
      6615 views
      11. Problem on Tension and Acceleration for Horizontal and Vertical Motion
    11. Problem on Tension and Acceleration for Horizontal and Vertical Motion
      2737 views
      12. Momentum and Newton's Second Law of motion
    12. Momentum and Newton's Second Law of motion
      6044 views
      13. Problem on Relation Between Force and Momentum
    13. Problem on Relation Between Force and Momentum
      1809 views
      14. Law of Conservation of Momentum
    14. Law of Conservation of Momentum
      7151 views
      3.3: Friction (Practice Test)
      Introduction to Friction
    1. Introduction to Friction
      7683 views
      2. Problem on Introduction to Friction
    2. Problem on Introduction to Friction
      3. Rolling Friction
    3. Rolling Friction
      6552 views
      4. Braking and Skidding
    4. Braking and Skidding
      3376 views
      5. Advantages and Disadvantages of Friction
    5. Advantages and Disadvantages of Friction
      3639 views
      6. Method of Reducing Friction
    6. Method of Reducing Friction
      3122 views
      3.4: Uniform Circular Motion (Practice Test)
      Uniform Circular Motion
    1. Uniform Circular Motion
      7147 views
      2. Centripetal and Centrifugal Force
    2. Centripetal and Centrifugal Force
      7101 views
      3. Applications of Centripetal Force
    3. Applications of Centripetal Force
      5319 views
      4. More on Applications of Centripetal Force
    4. More on Applications of Centripetal Force
      2265 views

    Chapter 4 Turning Effect of Forces ( 23 videos)  (Practice Test)

      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 (Practice Test)
      Addition and Subtraction of Vectors
    1. Addition and Subtraction of Vectors
      20633 views
      2. Problem 1 on Vector Addition and Subtraction
    2. Problem 1 on Vector Addition and Subtraction
      15108 views
      3. Problem 2 on Vector Addition and Subtraction
    3. Problem 2 on Vector Addition and Subtraction
      9509 views
      4.3: Resolution of Forces
      Resolution of Vector
    1. Resolution of Vector
      3468 views
      2. Problem on Resolution of Forces
    2. Problem on Resolution of Forces
      2100 views
      4.4: Torque or Moment of a Force
      Rigid Body
    1. Rigid Body
      2. Axis of Rotation
    2. Axis of Rotation
      5223 views
      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
      4.5: Principle of Moments
      Principle of Moments
    1. Principle of Moments
      5078 views
      2. Problem on Principle of Moments
    2. Problem on Principle of Moments
      2420 views
      4.6: Centre of Mass
      Center of Mass
    1. Center of Mass
      4835 views
      4.7: Centre of Gravity
      Center of Gravity
    1. Center of Gravity
      5470 views
      4.8: Couple
      Introduction to Couple
    1. Introduction to Couple
      4417 views
      4.9: Equilibrium (Practice Test)
      Introduction to Equilibrium
    1. Introduction to Equilibrium
      11700 views
      2. Equilibrium of Bodies Under the Action of Coplanar Forces
    2. Equilibrium of Bodies Under the Action of Coplanar Forces
      7077 views
      3. Problem 1 on Conditions for Equilibrium
    3. Problem 1 on Conditions for Equilibrium
      6138 views
      4. Problem 2 on Conditions for Equilibrium
    4. Problem 2 on Conditions for Equilibrium
      4659 views
      5. Problem 3 on Conditions for Equilibrium
    5. Problem 3 on Conditions for Equilibrium
      4057 views
      6. Problem 4 on Conditions for Equilibrium
    6. Problem 4 on Conditions for Equilibrium
      4589 views
      7. States of Equilibrium
    7. States of Equilibrium
      4928 views
      4.10: Stability and Position of Centre of Mass
      Stability and Position of Center of Mass
    1. Stability and Position of Center of Mass
      3036 views

    Chapter 5 Gravitation ( 7 videos)  (Practice Test)

      5.1: The Force of Gravitation (Practice Test)
      Law of Gravitation
    1. Law of Gravitation
      8771 views
      2. Problem on Law of Gravitation and Newton's Third Law of Motion
    2. Problem on Law of Gravitation and Newton's Third Law of Motion
      2183 views
      3. Gravitational Field
    3. Gravitational Field
      5580 views
      5.2: Mass of the Earth
      Calculation of Mass of the Earth
    1. Calculation of Mass of the Earth
      9491 views
      5.3: Variation of g with Altitude (Practice Test)
      Variation of
    1. Variation of "g" with Altitudes
      6651 views
      2. Problem on Variation of
    2. Problem on Variation of "g" with Altitudes
      2176 views
      5.4: Artificial Satellites
      Artificial Satellites
    1. Artificial Satellites
      5242 views

    Chapter 6 Work and Energy ( 21 videos)  (Practice Test)

      6.1: 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
      6.2: Energy
      Introduction to Energy
    1. Introduction to Energy
      8462 views
      6.3: Kinetic Energy
      Kinetic Energy
    1. Kinetic Energy
      6734 views
      2. Problem on Kinetic Energy
    2. Problem on Kinetic Energy
      3002 views
      6.4: Potential Energy
      Potential Energy
    1. Potential Energy
      7324 views
      2. Problem on Potential Energy
    2. Problem on Potential Energy
      1338 views
      6.5: Forms of Energy
      Forms of Energy
    1. Forms of Energy
      5282 views
      6.6: Interconversion of Energy
      Interconversion of Energy
    1. Interconversion of Energy
      3092 views
      2. Problem on interconversion of K.E and P.E
    2. Problem on interconversion of K.E and P.E
      1422 views
      6.7: Major Sources of Energy (Practice Test)
      Energy from Non-Renewable Sources
    1. Energy from Non-Renewable Sources
      3436 views
      2. Energy from Renewable Sources
    2. Energy from Renewable Sources
      1733 views
      3. More on Energy from Renewable Sources
    3. More on Energy from Renewable Sources
      1364 views
      4. Mass Energy Equation
    4. Mass Energy Equation
      4489 views
      5. Electricity from Fossil Fuels
    5. Electricity from Fossil Fuels
      1533 views
      6. Energy and Environment
    6. Energy and Environment
      1312 views
      7. Flow-Diagram of Energy Converter
    7. Flow-Diagram of Energy Converter
      1183 views
      6.8: Efficiency
      Efficiency and its Advantages
    1. Efficiency and its Advantages
      2503 views
      2. Problem on Introduction to Efficiency
    2. Problem on Introduction to Efficiency
      302 views
      6.9: Power (Practice Test)
      Power
    1. Power
      7657 views
      2. Problem on Introduction to Power
    2. Problem on Introduction to Power
      1590 views

    Chapter 7 Properties of Matter ( 27 videos)  (Practice Test)

      7.1: Kinetic Molecular Model of Matter (Practice Test)
      Kinetic Molecular Model of Matter
    1. Kinetic Molecular Model of Matter
      4757 views
      2. More on Kinetic Molecular Model of Matter
    2. More on Kinetic Molecular Model of Matter
      4979 views
      7.2: Density
      Introduction to Density
    1. Introduction to Density
      3922 views
      2. Problem 1 on Introduction to Density
    2. Problem 1 on Introduction to Density
      1447 views
      3. Problem 2 on Introduction to Density
    3. Problem 2 on Introduction to Density
      1152 views
      4. Problem 3 on Introduction to Density
    4. Problem 3 on Introduction to Density
      1013 views
      7.3: Pressure (Practice Test)
      Introduction to Pressure
    1. Introduction to Pressure
      4202 views
      2. Problem on Introduction to Pressure
    2. Problem on Introduction to Pressure
      1655 views
      7.4: Atmospheric Pressure
      Atmospheric Pressure, Its Measurement and Variation
    1. Atmospheric Pressure, Its Measurement and Variation
      6129 views
      7.5: Pressure in Liquids (Practice Test)
      Pressure in Liquids
    1. Pressure in Liquids
      5855 views
      2. Problem on Pressure in Liquids
    2. Problem on Pressure in Liquids
      1362 views
      3. Pascal’s Law
    3. Pascal’s Law
      4297 views
      4. Problem on Hydraulic Press
    4. Problem on Hydraulic Press
      1622 views
      5. Braking System in Vehicles
    5. Braking System in Vehicles
      2615 views
      7.6: Archimedes Principle (Practice Test)
      Archimedes Principle
    1. Archimedes Principle
      8952 views
      2. Problem on Archimedes Principle
    2. Problem on Archimedes Principle
      1490 views
      3. Calculate Density of an Object using Archimede's Principle
    3. Calculate Density of an Object using Archimede's Principle
      3145 views
      4. Problem on Density of an Object by Archimedes Principle
    4. Problem on Density of an Object by Archimedes Principle
      719 views
      7.7: Principle of Floatation
      Buoyancy, Upthrust and Principle of Floatation
    1. Buoyancy, Upthrust and Principle of Floatation
      2. Problem on Principle of Floatation
    2. Problem on Principle of Floatation
      1218 views
      3. Applications of Archimedes Principle
    3. Applications of Archimedes Principle
      5348 views
      7.8: Elasticity (Practice Test)
      Elasticity
    1. Elasticity
      4794 views
      7.9: Hooke's Law (Practice Test)
      Hooke's Law
    1. Hooke's Law
      6732 views
      2. Problem on Hooke's Law
    2. Problem on Hooke's Law
      1357 views
      3. Young's Modulus
    3. Young's Modulus
      4716 views
      4. Problem 1 on Young's Modulus
    4. Problem 1 on Young's Modulus
      1284 views
      5. Problem 2 on Young's Modulus
    5. Problem 2 on Young's Modulus
      1013 views

    Chapter 8 Thermal Properties of Matter ( 28 videos)  (Practice Test)

      8.1: Temperature and Heat
      Temperature and heat
    1. Temperature and heat
      15439 views
      8.2: Thermometer (Practice Test)
      Introduction to Thermometer
    1. Introduction to Thermometer
      4699 views
      2. Thermometric Properties
    2. Thermometric Properties
      3835 views
      3. Why Mercury is Used in Glass Thermometer ?
    3. Why Mercury is Used in Glass Thermometer ?
      6819 views
      4. Why Alcohol is Used in Glass Thermometer ?
    4. Why Alcohol is Used in Glass Thermometer ?
      3371 views
      5. Scales of Temperature
    5. Scales of Temperature
      1278 views
      6. Conversion of Temperature Among Different Scale
    6. Conversion of Temperature Among Different Scale
      2540 views
      7. Problem 1 on Conversion of Temperature Among Different Scale
    7. Problem 1 on Conversion of Temperature Among Different Scale
      1133 views
      8. Problem 2 on Conversion of Temperature Among Different Scale
    8. Problem 2 on Conversion of Temperature Among Different Scale
      1082 views
      8.3: Specific Heat Capacity
      Difference between Heat Capacity and Specific Heat Capacity
    1. Difference between Heat Capacity and Specific Heat Capacity
      6740 views
      2. Problem1 on Specific Heat Capacity
    2. Problem1 on Specific Heat Capacity
      1499 views
      3. Problem2 on Specific Heat Capacity
    3. Problem2 on Specific Heat Capacity
      1328 views
      8.4: Change of State
      Change of State
    1. Change of State
      1389 views
      8.5: Latent Heat of Fusion
      Introduction to Latent Heat of Fusion
    1. Introduction to Latent Heat of Fusion
      5103 views
      2. Problem on Introduction to Latent Heat of Fusion
    2. Problem on Introduction to Latent Heat of Fusion
      1342 views
      3. Latent Heat of Fusion of Ice by an Experiment
    3. Latent Heat of Fusion of Ice by an Experiment
      4268 views
      8.6: Latent Heat of Vaporization
      Introduction to Latent Heat of Vaporization
    1. Introduction to Latent Heat of Vaporization
      3026 views
      2. Problem on Introduction to Latent Heat of Vaporization
    2. Problem on Introduction to Latent Heat of Vaporization
      1135 views
      3. Latent Heat of Vaporization of Water by an Experiment
    3. Latent Heat of Vaporization of Water by an Experiment
      1418 views
      8.7: The Evaporation (Practice Test)
      Introduction to Evaporation
    1. Introduction to Evaporation
      2084 views
      2. More on Introduction to Evaporation
    2. More on Introduction to Evaporation
      1282 views
      8.8: Thermal Expansion (Practice Test)
      Linear Thermal Expansion in Solids
    1. Linear Thermal Expansion in Solids
      9243 views
      2. Problem on Linear Thermal Expansion in Solids
    2. Problem on Linear Thermal Expansion in Solids
      4426 views
      3. Volume Expansion
    3. Volume Expansion
      7541 views
      4. Problem on Volume Thermal Expansion in Solids
    4. Problem on Volume Thermal Expansion in Solids
      2924 views
      5. Consequences of Thermal Expansion
    5. Consequences of Thermal Expansion
      2822 views
      6. Application of Thermal Expansion
    6. Application of Thermal Expansion
      6150 views
      7. Thermal Expansion of Liquids
    7. Thermal Expansion of Liquids
      6302 views

    Chapter 9 Transfer of Heat ( 11 videos)  (Practice Test)

      9.1: Transfer of Heat
      Transfer of Heat
    1. Transfer of Heat
      4629 views
      9.2: Conduction (Practice Test)
      Conduction
    1. Conduction
      3828 views
      2. Thermal Conductivity
    2. Thermal Conductivity
      8291 views
      3. Problem on Thermal Conductivity
    3. Problem on Thermal Conductivity
      1674 views
      4. Uses of Conductors and Insulators
    4. Uses of Conductors and Insulators
      2387 views
      9.3: Convection
      Convection
    1. Convection
      4097 views
      2. Application of Convection
    2. Application of Convection
      4319 views
      9.4: Radiation (Practice Test)
      Introduction to Radiations
    1. Introduction to Radiations
      3015 views
      2. Emission and Absorption of Radiations
    2. Emission and Absorption of Radiations
      2130 views
      3. Green House Effect
    3. Green House Effect
      3546 views
      9.5: Application and Consequences of Radiation
      Application and Consequences of Radiation
    1. Application and Consequences of Radiation
      2260 views