**Description:**

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 inquisive 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-I** •
Estimation by order of magnitude • Need for accurate measurement • Measurement
of a physical quantity • Kinds of units • Systems of unit • International
system of units—The SI 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–II** •
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** •
Force • Contact Force • Some Examples of the Contact Force • Noncontact Force
or Action-at-a-Distance Force • Some Examples of the Noncontact (or
Action-at-a-Distance) Force • Units of Force • Galileo’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** • Heat • Effects of heat •
Temperature • Thermal 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 •
Thermometry • Thermometers • Liquid-in-glass thermometers • The fixed points of
a thermometer • The clinical thermometer • Temperature scales • Global warming

**Chapter 9. Energy Flow and Resources** •
Flow of energy in an ecosystem • Application of the laws of thermodynamics •
Resources and their conservation • Non-renewable energy sources • Coal •
Petroleum • Liquefied petroleum gas (LPG) • Natural gas • Inequitable use of
energy in urban and rural areas • Practices for conservation of resources •
Promotion of the renewable resources • Advantages and disadvantages of
renewable resources over nonrenewable resources • Renewable energy sources •
Energy from waste (biomass): bioenergy • Wood and charcoal • Cattle dung—a
versatile biomass • Biogas • Biogas plants • Solar energy • Harnessing solar
energy • Electricity from sunlight • Wind energy • Windmill • Nuclear energy •
Nuclear reactions • Nuclear fission • Energy released in fission reactions •
Electricity from nuclear energy • Energy from water • Energy from the sea/ocean
• Issues of economic viability and ability to meet demands • Improving
efficiency of existing technologies and introducing new ecofriendly
technologies • Social initiatives

**Chapter 10. 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 11. 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** **•**
**Sign convention for the spherical mirrors** **•** **Mirror formula

**Chapter 12. 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 13. 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 14. 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 15. Electricity and Magnetism – III: 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

**About the Authors:**

**Dr. S K Jain** did his postgraduation from
IIT Delhi and PhD from University of Delhi. He specializes in Boxed Features
Physical Chemistry and takes special interest in Electrochemistry and Energy
Conversion. He has published over fifty research papers in journals of
international repute. Dr. Jain has visited several countries on research
assignments as Research Associate and also as Visiting Scientist. He has
written many textbooks for school and college students.

**Dr. Shailesh K Jain** did his
postgraduation from IIT I<anpur and PhD from United Kingdom. He specializes
in the field of Heterogeneous Catalysis and has special interest in the field
of Analytical Chemistry related to the metallurgical operations. He has
published several research papers and co-authored many textbooks for school and
college students. He is involved actively in the popularization of Science at
School/undergraduate levels.

**Target Audience:**

Students
of ICSE Class IX.