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ICSE Board Solved PHYSICS Exam Papers :

 ICSE Board Class X Solved Exam Question Papers : ICSE 2008 : SCIENCE Paper 1 (Physics)

Solved ICSE Board exam paper study guide - ICSE 2008 : SCIENCE Paper 1 (Physics) - I.C.S.E. Free Online Question Paper

ICSE Board Class X Solved Exam Question Papers : ICSE 2007 : SCIENCE Paper 1 (Physics)

Solved ICSE Board exam paper study guide - ICSE 2007 : SCIENCE Paper 1 (Physics) - I.C.S.E. Free Online Question Paper

ICSE Board Class X Solved Exam Question Papers : ICSE 2006 : SCIENCE Paper 1 (Physics)

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ICSE Board Class X Solved Exam Question Papers : ICSE 2005 : SCIENCE Paper 1 (Physics)

Solved ICSE Board exam paper study guide - ICSE 2005 : SCIENCE Paper 1 (Physics) - I.C.S.E. Free Online Question Paper

ICSE Board Class X Solved Exam Question Papers : ICSE 2004 : SCIENCE Paper 1 (Physics)

Solved ICSE Board exam paper study guide - ICSE 2004 : SCIENCE Paper 1 (Physics) - I.C.S.E. Free Online Question Paper

ICSE Board Class X Solved Exam Question Papers : ICSE 2003 : SCIENCE Paper 1 (Physics)

Solved ICSE Board exam paper study guide - ICSE 2003 : SCIENCE Paper 1 (Physics) - I.C.S.E. Free Online Question Paper

ICSE Board Class X Solved Exam Question Papers : ICSE 2002 : SCIENCE Paper 1 (Physics)

Solved ICSE Board exam paper study guide - ICSE 2002 : SCIENCE Paper 1 (Physics) - I.C.S.E. Free Online Question Paper

ICSE Board Class X Solved Exam Question Papers : ICSE 2001 : SCIENCE Paper 1 (Physics)

Solved ICSE Board exam paper study guide - ICSE 2001 : SCIENCE Paper 1 (Physics) - I.C.S.E. Free Online Question Paper

ICSE Board Class X Solved Exam Question Papers : ICSE 2000 : SCIENCE Paper 1 (Physics)

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ICSE Board Class X Solved Exam Question Papers : ICSE 1999 : SCIENCE Paper 1 (Physics)

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ICSE Board Class X Solved Exam Question Papers : ICSE 1998 : SCIENCE Paper 1 (Physics)

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ICSE Board Class X Solved Exam Question Papers : ICSE 1997 : SCIENCE Paper 1 (Physics)

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ICSE Board Class X Solved Exam Question Papers : ICSE 1996 : SCIENCE Paper 1 (Physics)

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A General Briefing on Studying Physics (for Indian Students)

Quite often we hear “There is no substitute for hard work

Everyone you come across advise you to work hard.


Mere hard work  will not pay.


Prototype Developed To Detect Dark Matter

ScienceDaily (Sep. 25, 2009) — A team of researchers from the University of Zaragoza (UNIZAR) and the Institut d'Astrophysique Spatiale (IAS, in France) has developed a "scintillating bolometer" -- a device that the scientists will use in efforts to detect the dark matter of the universe, and which has been tested at the Canfranc Underground Laboratory in Huesca, Spain.


Latest News in Physics

Scientists to go where no chemists has gone before



As phones get smarter, game makers ring the changes



IBM Celebrates 20th Anniversary of Moving Atoms



Expert bursts champagne bubble theory



Pushing the cold frontier in an orderly fashion



CBSE Class XII (AISSCE) Old question Papers

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Physics Books and Texts online

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Momentum and Its Conservation

Physics Formulas

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Glossary of Physics Terms

Elements for Physics

Hadron models and related New Energy issues (collective book)

Quantization in Astrophysics, Brownian Motion, and Supersymmetry (collective book)

Newtonian Physics

The Modern Revolution in Physics

Conceptual Physics

An instructor's guide in Physics

Learn Physics Today

Begin the Adventure/How to Break the Light Barrier (H. B. Tilton, F. Smarandache second edition)

Neutrosophic Methods in General Relativity (D. Rabounski, F. Smarandache, L. Borissova)

Work, Energy, and Power

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Laws of Physics A Primer

Physics 1 Online Course Outline

Interactive Physics Textbook

Elementary Physics II

A Radically Modern Approach to Introductory Physics

Physics [Tower, Smith, Turton, Cope PDF 508p]

Essential Physics Part1[PDF 210p]

Physics of the Universe NASA

Elements for physics [PDF 280]

Inverse Problem Theory[PDF 358p]

Motion Mountain Free Physics Text Book

Order of Magnitude Physics Material


Physics 1 Online Course Outline

Physical Metallurgy



Gravitational Waves

Consciousness, Physics, and the Holographic Paradigm

Conceptual Physics [PDF]

Discover Physics

Essential Physics Part1[PDF 210p]

Lectures in Physics

The Age of Einstein [ PDF 78p]

The Grand Unified Theory of Classical Physics

Introduction to Vectors and Tensors, Volume 1

Introduction to Vectors and Tensors, Volume 2

Newtonian Physics [Benjamin Crowell]

Mapping of Probabilities Theory for the Interpretation of Uncertain Physical Measurements [PDF 305p]

General Physics Course Notes

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ICSE Sample Paper – 2008

Sample Paper – 2008
Class – XII
Subject – Physics
 (Three Hours)
Candidates are allowed additional 15 minutes for only reading the paper.They must not start writing during this time.
Answer all questions in Part 1 and six questions in Part 2 choosing two questions each from Section A,Section B and Section C
All working including rough work should be done on the same sheet as and adjacent to the rest of the answer.The intended marks for each question or parts of question are given in brackets [ ]
Material to be supplied: Mathematical tables including trigonometric tables
A list of useful physical constants is given at the end of the paper.
Part I
Answer all the questions briefly and to the point
Question 1                                                                                                                                         [20]
a)      What is the work done by the electric field of the nucleus of an atom on a ‘complete’ circular orbit in which an electron is revolving.What will be the work done if the orbit was elliptical
b)      Define mutual inductance
c)      A transformer converts a voltage of 12V to 240 V.Calculate the turns ratio
d)      State Ampere’s Circuital Law
e)      Can a sphere of radius 1cm hold a charge of 1C.Explain
f)       When we touch the wires connected to capacitors of capacitance 2µF and 0.2µF both at same potential we get a more intense shock from the wire connected to the 0.2µF capacitor.Why?
g)      A potential difference of 10V is applied across a 6m long wire.Calculate potential gradient
h)      An inductor of inductance 10mH is connected to an a.c. of frequency 50 Hz.Calculate inductive reactance
i)        What is Seebeck effect?
j)        What will happen to the drift velocity of electrons in a conductor if:
               i) its length is increased
              ii) its temperature is increased
k)      A cell of internal resistance 0.5 Ω is being charged by a p.d. of 15V and by passing a current of 1A.Calculate the emf of the cell
l)        What is depletion layer in a p-n junction diode
m)    Explain the occurrence of characteristic curves in the spectrum of X-rays
n)      Calculate the de-Broglie wavelength of a photon having mass 3.3 X 10-25 kg and moving with a velocity of 104  m/s
a)      Calculate the angular width of the central maximum in single slit fraunhoffer diffraction pattern when a light of wavelength of 5890 nm is used. The width of the slit is 0.02 m
b)      Give two applications of remote sensing
c)      Define luminous intensity .State its SI unit
d)      When a ring is placed on the projecting core of an electromagnet and circuit is closed the ring moves up.Why?
e)      What is the source of sun’s energy
f)       State radioactive decay law
Part II
(Answer six questions choosing two questions each from Section A,SectionB and Section C)
Section A
(Answer any two questions)
Question 2
a)      Two balls of density 1.6 kg/m3 is hung by two strings from a point.The angle between the strings at equilibrium is 300 . The whole system is now immersed in a liquid of density 0.8 kg/m3.The angle between the strings remain equal.Calculate the dielectric constant of the liquid .(Assume masses of strings to be negligible)                                                                                                 [4]
b)      Deduce Coulomb’s Law from Gauss’ Theorem                                                                            [3]
c)      An electric dipole of dipole moment p=2ql is placed in an electric field of intensity E at an
Angle θ.Deduce the expression for the torque experienced by it                                                   [2]
Question 3
a)      To reduce the value of  current flowing through a galvanometer 25 times what value of shunt
should be connected.The resistance of the galvanometer is 1000Ω.                                              [2]
b)      Using Biot-Savart’s Law deduce the expression for the magnetic field at a point due to an
infinitely long conductor                                                                                                                [4]
c)      Give three points of difference between dia para and ferro magnetic substances                         [3]
Question 4
a)      Two circulars loops of radius 3 cm and 15 cm are kept apart coaxially at a distance of 20cm
A current of 2A flows through the smaller loop.Calculate the flux linked with the bigger loop
and the mutual inductances between the coils                                                                              [3]
a)      A circuit draws a power of 550W from a 220V-50Hz a.c. source.The power factor of the
circuit is 0.8.The current lags behind voltage.Show that a capacitor of capacitance 
is to be connected so as to bring the power factor to unity                                                           [3]
b)      Show that the resonant frequency of an LCR ac circuit is                                                   [3]
Section B
(Answer any two questions)
Question 5
a)      Using Huygen’s theory prove the laws of refraction of light                                             [4]
b)      In Young’s Double Slit Experiment the fringe width was found to be 2.5mm when a
light of 6000 angstrom is used.What will be the fringe width when the apparatus is immersed
in water of refractive index 1.33                                                                                         [4]
Question 6
a)      Write four differences between interference and diffraction                                                [2]
b)      A light ray is incident on a glass surface at polarizing angle.If angle of refraction is 320
Calculate angle of polarization and refractive index.                                                            [2]
c)      Deduce the expression for achromatic combination of lenses.State some essential features
of achromatic doublet                                                                                                            [4]
Question 7
a)      Draw a neat labeled diagram of compound microscope and deduce the expression for its
Magnifying power                                                                                                                  [4]
b)      An object and a screen are kept at a distance D apart .In between a convex lens of focal length f is
Placed.The real image is formed when the lens is displaced by a distance x.
Show that                                                                                                               [3]
c)      The focal length of a convex lens in air is 15 cm.What will be its focal length under water
 µwater=1.33, µglass=1.5                                                                                                             [1]
Section C
(Answer any two questions)
Question 8
a)      In a cathode ray tube an electron is accelerated from rest through a potential difference of 1000 V
The length of the plates is 2cm and the distance between the plates is 0.5mm.If the deflection
Of the electron is 0.25cm.Calculate the potential difference between the two plates              [3]
b)      Write down the main differences between Compton effect and photoelectric effect             [2]
c)      When a metallic plate is illuminated alternately by lights of wavelength 3000 angstroms and 6000Angstroms.The maximum velocity of the photoelectrons emitted is in the ratio 3:1.Calculate
The work function of the metal and the maximum velocities of the emitted photoelectrons   [3]
Question 9
a)      Atomic masses can be determined precisely by mass spectrography.The atomic mass of         [4]
4He2  Molecule measured by this technique is 4.0026u (1u=1.66 X 10-27 kg)
i)                    Compare the given mass of the molecule with the sum of the masses of its components
Which one is greater and by how much?(mp=1.0073 u ,me=0.00055u , mn=1.0087 u)
ii)                  Calculate the binding energy in joules and MeV
iii)                Calculate binding energy per nucleon
b)      Represent graphically the binding energy per nucleon and the atomic masses of elements
Write down three major observations from this graph                                                                 [3]
c)      In a nuclear reactor state the function of     i) Moderator        ii) Control Rod                            [1]
Question 10
a)      Draw a labeled diagram for the use of p-n-p transistor as an amplifier.Explain how there
Is a reversal of phase in the current entering and leaving                                                        [3]
b)      Draw and explain the V-I characteristics of p-n junction diode under reverse bias                [3]
c)      The output of  OR gate is connected to NOT gate.Draw the resultant gate and the truth
Table for it                                                                                                                                [2]
Electron Charge (e)                = C
Unified Atomic mass (u)        =  kg
Planck’s Constant (h)              =  J s
Electron Volt (eV)                 =   J
Speed of em waves in vacuum(c) =  m/s
Rydberg Constant (R)                  = m-1
Permittivity of free space (ϵ0)       = F/m
                                                =             N m2 C-2
Permeability of free space (µ0)       =  4 T.m.A-1
                                                            = 3.14

ICSE Physics Sample Paper

General Instructions:
  1. Section I is compulsory. Attempt any four questions from Section II .
  2. The intended marks for questions or parts of questions are given in brackets [ ].
SECTION I (40 Marks)
Attempt all questions from this Section
Question 1
(a) Which class of levers has a mechanical advantage always greater than one? What change can be brought about in this lever to increase its mechanical advantage? [2]
(b) Two bodies A and B of equal mass are kept at heights 20 m and 30 m respectively. Calculate the ratio of their potential energies. [2]
(c) What is the S.I. unit of upthrust? Mention one factor on which the upthrust of a liquid depends. [2]
(d) Why are infra-red radiations preferred over ordinary visible light for taking photographs in fog? [2]
(e) Define Relative density of a substance. [2]
Question 2
(a) Mention two reasons why water is not suitable barometric liquid. [2]
(b) State Snell's Law of Refraction of Light. [2]
(c) (i) What will be the color of a blue flower when it is seen in magenta colored light.
(ii) Name another secondary color of light in which the flower will show the same color as it shows in the magenta colored light. [2]
(d) The upper blood pressure of a patient is 160 cm of mercury whereas the normal blood pressure should be 120 cm of mercury. How much extra pressure is generated by the heart above the normal pressure? (Give your answer in S.I. unit.) (Density of mercury = 13600 kg m-3 ; g = 9.8 ms-2) [2]
(e) Draw an approximate graph to show the variation of atmospheric pressure with altitude. [2]
Question 3
(a) Define the terms:- [2]
  1. Amplitude
  2. Frequency (as applied to sound waves)
(b) An object is placed in front of a converging lens at a distance greater than twice the focal length of the lens. Draw a ray diagram to show the formation of the image. [2]
(c) Mention one difference between reflection of light from a plane mirror and total internal reflection of light from a prism. [2]
(d) The V-I graph for a series combination and for a parallel combination of two resistors is as shown in the figure below:-
Which of the two, A or B, represents the parallel combination? Give a reason for your answer. [2]
(e) Of the three connecting wires in a household circuit:- [2]
  1. Which two of the three wires are at the same potential?
  2. In which of the three wires should the switch be connected?
Question 4
(a) What will an alpha particle change into when it absorbs:- [2]
  1. One electron;
  2. Two electrons?
(b) Some hot water was added to three times its mass of cold water at 100C and the resulting temperature was found to be 200C. What was the temperature of the hot water? [2]
(c) Calculate the value of the resistance which must be connected to a 15Ω resistance to provide an effective resistance of 6Ω. [2]
(d) Why are burns caused by steam more severe than those caused by boiling water at the same temperature? [2]
(e) Mention two important properties of a metal that make it a good thermionic emitter. [2]
SECTION II (40 Marks)
Attempt any four questions from this Section
Question 5
(a) (i) Define a kilowatt hour. How is it related to the joule?
(ii) How can the work done be measured when force is applied at an angle to the direction of displacement? [3]
(b) (i)What is the main energy transformation that occurs in:-
  1. Photosynthesis in green leaves;
  2. Charging of a battery.
(ii) Write an expression to show the relationship between mechanical advantage, velocity ratio and efficiency for a simple machine. [3]
(c) A block and tackle pulley system has a velocity ratio 3. [4]
  1. Draw a labelled diagram of this system. In your diagram, indicate clearly the points of application and the directions of the load and effort.
  2. Why should the lower block of this pulley system be of a negligible weight?
Question 6
(a) (i) Name and state the principle on which the working of a hydraulic machine is based.
(ii) A balloon filled with hydrogen rises to a certain height and then stops rising. Why does it stop rising? [3]
(b) (i) State the Archimedes Principle.
(ii) Explain why a piece of iron sinks in water while a ship made of iron floats. [3]
(c) A piece of wood of volume 200 cm3 and density 0.84g cm-3 floats in a liquid of density 1.05g cm-3[4]
  1. What volume of wood will remain above the surface of the liquid?
  2. What force must be exerted on the wood to keep it totally submerged?
Question 7
(a) The diagram given below shows a right-angled prism with a ray of light incident on the side AB. (The critical angle for glass is 420) [3]
  1. Copy the diagram and complete the path of the ray of light in and out of the glass prism.
  2. What is the value of the angle of deviation shown by the ray?
(b) (i) A particular type of high energy invisible electromagnetic rays help us to study the structure of crystals. Name these rays and give another important use of these rays.
(ii) How does the speed of light in glass change on increasing the wavelength of light? [4]
(c) (i) With the help of a well-labelled diagram show that an apparent depth of an object, such as a coin, in water is less than its real depth.
(ii) How is the refractive index of water related to the real depth and the apparent depth of a column of water? [3]
Question 8
(a) A man standing in front of a vertical cliff fires a gun. He hears the echo after 3 seconds. On moving closer to the cliff by 82.5 m, he fires again.This time, he hears the echo after 2.5 seconds. Calculate:- [3]
  1. the distance of the cliff from the initial position of the man.
  2. the velocity of sound. [3]
(b) (i) What is meant by Specific heat capacity of a substance?
(ii) Why does the heat supplied to a substance during its change of state not cause any rise in its temperature? [3]
(c) A substance is in the form of a solid at 00C. The amount of heat added to this substance and the temperature of the substance are plotted on the following graph:- [4]
If the specific heat capacity of the solid substance is 500J/kg0C, find from the graph:-
  1. the mass of the substance;
  2. the specific latent heat of fusion of the substance in the liquid state.
Question 9
(a) (i) What is meant by earthing of an electrical appliance? Why is it essential? [3]
(ii) What will be the effect on the working of an electrical bell if instead of a direct current, an alternating current is used?
(b) (i) State two factors on which the strength of an induced current depends. [3]
(ii) When a solenoid that is carrying current is freely suspended, it comes to rest along a particular direction. Why does this happen?
(c) A cell of 1.5 V and internal resistance 1.0 Ω is connected to two resistors of 4.0 Ω and 20.0 Ω in series as shown in the figure:- [4]
Calculate the:-
  1. current in the circuit.
  2. potential difference across the 4.0 ohm resistor.
  3. voltage drop when the current is flowing.
  4. potential difference across the cell.
Question 10
(a) Name the three main parts of a hot cathode ray tube. Mention one important function of each of the three main parts. [3]
(b) (i) State the principle on which the functioning of a nuclear reactor is based.
(ii) Name the material that can be used as fuel in a nuclear reactor.
(iii) How is the activity in a nuclear reactor controlled?[3]
(c) (i) What happens to the atomic number of an element when it emits:- [4]
  1. an alpha particle;
  2. a beta particle.
(ii) Explain why alpha and beta particles are deflected in an electric or a magnetic field but gamma rays are not deflected in such a field.