**Book Title: Viva ICSE Physics - 9**

**Product Code / ISBN Code: 9789386824059**

**Syllabus: ICSE**

**Publisher: Viva**

**Language: English**

**Boxed Features**

**Topic-end Assignments**

**Solved Examples**

**Activities**

**lllustrative Questions**

The book VIVA ICSE PHYSICS for Class IX has been prepared with a hope that it will be able to meet the

academic aspirations of the young inquisitive minds.

**Salient Features of the Book**

- Based on the latest syllabus of Physics for Class IX prescribed by the Council for the Indian School Certificate Examinations, New Delhi
- An informal, interactive style of presentation
- A large number of questions, well-labelled illustrations and diagrams, pictures, solved examples, etc., to help students understand various facts and concepts clearly
- Topic-end assignments, to help students develop a better understanding of the concepts learned
- Boxed features, to highlight the past and future developments in science and technology, and provide more relevance to the subject described therein
- Activities, to help students understand a topic in an interactive way
- Pointwise summary, to help students recapitulate the main ideas or facts learned

**Contents:**

**Chapter 1: Measurements and Experimentation-l** • Estimation by order of magnitude • Need for accurate measurement • Measurement of a physica quantity • Kinds of units Systems of unit • International system of units-The 51 units • Multiples and submultiples of SI units • Some examples of derived units • Measurement of length • Multiple and submultiples of metre • Devices for measuring length • Vernier callipers • Measuring the length of an object using a vernier callipers • Screw gauge • Measuring the diameter of a wire or thickness of a metal sheet with a screw gauge

**Chapter 2: Measurements and Experimentation-ll** • Volume and Its units • Measuring volume of a liquid • Measuring volume of a solid having an irregular shape, heavier than water and insoluble in water • Measuring volume of a solid having an irregular shape, lighter than water and insoluble in water • Measuring volume of a solid having an irregular shape and soluble in water • Measurement of time • Stopwatch • Stop clock • Simple pendulum • Measurement of mass • A beam balance: The physical balance • Presentation of data in tabular form • Presentation of data in graphical form

**Chapter 3: Motion in One Dimension** • State of rest and motion • Scalar and vector quantities • Distance and displacement • Speed • Velocity • Acceleration • Graphical representation of linear motion • Distance-time graphs • Calculation of speed from a distance-time graph • Displacement-time graphs • Speed-time and velocity-time graphs for a body moving along a straight line in a particular direction • Calculation of distance travelled from speed-time graphs • Velocity-time graphs • Derivation of equations of motion for uniformly accelerated motion in a straight line • Derivation of the equations of motion by graphical method • Solving numerical problems based on the equations of motion

**Chapter 4: Newton’s Laws of Motion** • Galilee’s concept of motion • Newton’s laws of motion • Inertia • Inertia and mass • Examples of inertia • Newton’s first law of motion • Newton’s second law of motion • Linear momentum • Change in momentum and the second law of motion • Units of force • Some examples of second law of motion in daily life • Newton’s third law of motion • Illustrating Newton’s third law of motion

**Chapter 5: Gravitation **• Newton’s universal law of gravitation • Gravitational force between objects of different sizes • Newton’s third law of motion and gravitation • Applications of Newton’s law of gravitation • Falling objects and acceleration due to gravity: motion of particles under gravity • Gravity and gravitation • Equations of motion for a body moving under gravity • Mass and weight

**Chapter 6: Pressure in Fluids and Atmospheric Pressure **• Fluids • Thrust and pressure • Experimental verification of the laws of pressure exerted by liquids • Pressure exerted by a liquid column • Some consequences of the formula for pressure in liquids • Laws of pressure exerted by liquids • Transmission of pressure in liquids • Pascal’s law • Applications of Pascal’s law • Atmospheric pressure • Common manifestation (or consequences) of atmospheric pressure • Measurement of atmospheric pressure : Barometers • Fortin’s barometer • The aneroid barometer • Variation of atmospheric pressure with altitude • Weather forecast with the help of a barometer

**Chapter 7: Upthrust, Archimedes’ Principle and Floatation** • Buoyancy or upthrust • Archimedes’ principle • Density and relative density • Applications of Archimedes’ principle • Floatation of objects • Principle of floatation • Application of the principle of floatation • Hydrometer • Lactometer • Acid battery hydrometer

**Chapter 8: Heat - I: Heat and Temperature, Thermal Expansion** • Heat • Effects of heat • Temperature • Demonstration of thermal expansion in solids • Demonstration of thermal expansion in liquids • Demonstration of thermal expansion in gases • Thermal expansion • Linear expansion • Expansion of solids in everyday life • Useful applications of expansion of solids • Superficial expansion • Cubical expansion Real and apparent expansion of a liquid • Graphs showing variation of volume and density of water with temperature • Anomalous expansion of water • Hope’s experiment to demonstrate anomalous expansion of water • Consequences of the anomalous expansion of water

**Chapter 9: Heat - II:** Thermometry • Thermometry • Thermometers • Liquid-in-glass thermometers • The fixed points of a thermometer • The clinical thermometer • Temperature scales

**Chapter 10: Heat - Ill: Transfer of Heat** • Transfer of heat • Conduction • Good and poor conductors of heat and insulators • Practical uses of nonconductors of heat (or insulators) • Uses of conductors • Convection • Convection currents in nature • Practical applications (or uses) of convection • Radiation • Detection of thermal (or heat) radiation • Absorbers and radiators (or emitters) of heat • Applications of radiation • Thermos flask (or vacuum flask) • Global warming

**Chapter 11: Light and its Reflection** • Reflection of light • Experimental verification of the laws of reflection • Mirrors Plane mirror • Real and virtual images • Formation of image by a plane mirror • Ray diagram for the formation of image by a plane mirror • Ray diagram showing lateral inversion • Multiple images formed by two mirrors inclined at an angle • Uses of plane mirrors • Periscope

**Chapter 12: Spherical Mirrors** • Spherical mirrors • Terminology for spherical mirrors • Derivation of the relationship between focal lengh and radius of curvature • Formation of images by a concave mirror • Formation of images by a convex mirror

**Chapter 13: Sound** • Production of sound • Sound needs a medium to propagate • Propagation of sound • Characteristics of a sound wave • Speed of sound in different media • Factors affecting the speed of sound in a gas (or air) • Sound travels slower than light-lightning and thunder • Range of hearing (or audible range) • Ultrasound • Applications of ultrasound

**Chapter 14: Electricity and Magnetism - I: Static Electricity** • Introduction • Simple orbital model of the atom • Quantum of electric charge • Static electricity • Repulsion is the sure test of charge on a body • Detection and testing of electrostatic charges • Pithball electroscope • The gold leaf electroscope • Charging of a gold leaf electroscope by conduction • Charging a gold leaf electroscope by induction • Detection and measurement of charge on a body by gold leaf electroscope • Identifying nature of electrostatic charge • Sparking • Electricity in the sky

**Chapter 15: Electricity and Magnetism - II: Current Electricity **• Sources of direct current • Primary cells • Secondary cells • Potential due to a charge • Electric current-Charges in motion • Electric symbols and circuit diagrams • Closed and open circuits • Some simple circuit and circuit diagrams • Ohm’s law • Resistance • Conductors and insulators • Combination of resistances

**Chapter 16: Electricity and Magnetism - Ill: Magnetism** • Natural and artificial magnets • Magnetic and nonmagnetic materials • Properties of magnets • Some terms related to a bar magnet and magnetism • Molecular theory of magnetism-The domain theory • Magnetic induction • Magnetic compass • Magnetic field and magnetic field lines (or lines of magnetic force) • Mapping of magnetic field lines (or magnetic lines of force) • Neutral points • Plotting of nonuniform magnetic field of a bar magnet and neutral points • The earth’s magnetic field •

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