Numerical Physics With Chapterwise Question Answers Class Xi By D C Upadhyay Dr J P Goel Er Meera Goyal

Author : D. C. Upadhyay, Dr. J. P. Goel,Er. Meera Goyal
Publisher : SBPD Publications
Page : 213 pages
File Size : 52,6 Mb
Release : 2020-06-27
Category : Science
ISBN : 9789351678113

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Numerical Physics With Chapterwise Question - Answers Class XI by D. C. Upadhyay, Dr. J. P. Goel, Er. Meera Goyal by D. C. Upadhyay, Dr. J. P. Goel,Er. Meera Goyal Pdf

Unit 1 : Physical World and Measurement 1. Systems of Units and Measurement, 2. Significant Figures and Error Analysis, 3. Dimensional Analysis, Unit 2 : Kinematics 4. Motion in a Straight Line, 5. Vector Analysis, 6. Motion in a Plane, Unit 3 : Laws of Motion 7. Newton’s Laws of Motion, 8. Friction, 9. Uniform Circular Motion , Unit 4 : Work, Energy and Power 10. Work, Energy and Power, Unit 5 : Motion of System of Particles and Rigid Body 11. Centre of Mass, 12. Rotational Motion and Moment of Inertia, Unit 6 : Gravitation 13. Gravitation, Unit 7 : Properties of Bulk Matter 14. Elasticity, 15. Pressure of Fluids, 16. Viscosity, 17. Surface Tension, 18. Temperature and Calorimetry, 19. Transfer of Heat, Unit 8 : Thermodynamics, 20. First Law of Thermodynamics, 21. Second Law of Thermodynamics, Unit 9 : Behaviour of Perfect Gases and Kinetic Theory of Gases 22. Behaviour of Perfect Gas and Kinetic Theory of Gases, Unit 10 : Oscillations and Waves 23. Oscillations, 24. Speed of Mechanical Waves and Progressive Waves, 25. Superposition of Waves : Interference and Beats, 26. Reflection of Waves : Stationary Waves in Stretched Strings and Organ Pipes, 27. Doppler’s Effect.

Author : D. C. Upadhyay, ,Dr. J. P. Goel, ,Er. Meera Goyal
Publisher : RAJEEV BANSAL
Page : 213 pages
File Size : 50,5 Mb
Release : 2023-07-30
Category : Science
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Bihar Board Numerical Physics Class 11 by D. C. Upadhyay, ,Dr. J. P. Goel, ,Er. Meera Goyal Pdf

Unit 1 : Physical World and Measurement 1.Systems of Units and Measurement ,2 .Significant Figures and Error Analysis, 3 .Dimensional Analysis , Unit 2 : Kinematics 4.Motion in a Straight Line, 5 .Vector Analysis, 6. Motion in a Plane, Unit 3 : Laws of Motion 7.Newton’s Laws of Motion , 8 .Friction, 9. Uniform Circular Motion, Unit 4 : Work, Energy and Power 10. Work, Energy and Power, Unit 5 : Motion of System of Particles and Rigid Body 11.Centre of Mass, 12. Rotational Motion and Moment of Inertia, Unit 6 : Gravitation 13.Gravitation, Unit 7 : Properties of Bulk Matter 14.Elasticity , 15. Pressure of Fluids, 16. Viscosity, 17. Surface Tension, 18. Temperature and Calorimetry, 19.Transfer of Heat, Unit 8 : Thermodynamics 20.First Law of Thermodynamics, 21. Second Law of Thermodynamics, Unit 9 : Behaviour of Perfect Gases and Kinetic Theory of Gases 22.Behaviour of Perfect Gas and Kinetic Theory of Gases, Unit 10 : Oscillations and Waves 23.Oscillations, 24. Speed of Mechanical Waves and Progressive Waves , 25. Superposition of Waves : Interference and Beats, 26. Reflection of Waves : Stationary Waves in Stretched Strings and Organ Pipes, 27. Doppler’s Effect.

Author : D. C. Upadhyay, ,Dr. J. P. Goel, ,Er. Meera Goyal
Publisher : SBPD Publications
Page : 317 pages
File Size : 40,8 Mb
Release : 2022-05-17
Category : Mathematics
ISBN : 8210379456XXX

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Numerical Physics With Chapterwise Question - Answers Class XII - SBPD Publications by D. C. Upadhyay, ,Dr. J. P. Goel, ,Er. Meera Goyal Pdf

Author : Dr. J. P. Goel, ,D. C. Upadhyay, ,Er. Meera Goyal
Publisher : SBPD Publications
Page : 317 pages
File Size : 46,9 Mb
Release : 2023-03-20
Category : Mathematics
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Numerical Physics With Chapterwise Question - Answers Class 12 [MP & Chhattisgarh] by Dr. J. P. Goel, ,D. C. Upadhyay, ,Er. Meera Goyal Pdf

UNIT – I Electroststics 1.Electric Charge and Electric Field, 2. Gauss’ Theoram, 3. Electric Potential, 4. Electric Capacitance, UNIT – II Current Electricity 5. Electric Conduction and Ohm’ s law, 6. Electric Measurement, UNIT – III Magnetic Effects of Electric Current And Management 7. Magnetic Effects of Electric Current , 8. Magnetism, UNIT – IV Electromagnetic Induction and Alternating Current 9. Electromagnetic Induction, 10. Alternating Current, UNIT – V Electromagnetic Waves, 11. Electromagnetic Waves, UNIT – VI Optics : (A) Ray Optics And Optical Instruments 12. Reflection And Refraction of Light, 13. Refraction of Light at Spherical Surface : Lenses, 14. Prism and Scatting Of Light, 15. Chromatic And Spherical Aberration, 16. Optical Instruments , UNIT – VI : Optics : (B) Wave Optics 16.Nature of Light and Huygens ‘s Principle, 17. Interference of Light, 18. Diffraction of light, 20. Polaristaion of Light, UNIT – VII Dual Nature Of Matter And Radiation 21.Particle Nature of Radiation and Waves Nature of Matter, UNIT – VIII Atoms and Nuclei 22.Atomic Physics, 23. X-Ray, 24. Structure of The Nucleus, 25. Nuclear Energy, 26. Radio Activity UNIT – IX Electronic Devices 27. Semiconductor Diode and Transistor, 28. Digital Electronics, UNIT – X Communication System 29.Principle Communication.

Author : D. C. Upadhyay,Dr. J. P. Goel,Er. Meera Goyal
Publisher : SBPD Publications
Page : 281 pages
File Size : 52,6 Mb
Release : 2020-06-27
Category : Science
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Numerical Physics With Chapterwise Question - Answers For Class XI by D. C. Upadhyay, Dr. J. P. Goel, Er. Meera Goyal by D. C. Upadhyay,Dr. J. P. Goel,Er. Meera Goyal Pdf

Unit 1 : Physical World and Measurement 1. Units and Measurement, 2. Errors in Measurement and Significant Figures, 3. Dimensional Analysis, Unit 2 : Kinematics 4. Motion in a Straight Line (One-Dimensional Motion), 5. Vector Analysis, 6. Motion in a Plane, Unit 3 : Laws of Motion 7. Newton’s Laws of Motion, 8. Friction, 9. Uniform Circular Motion, Unit 4 : Work, Energy and Power 10. Work, Energy and Power Unit 5 : Motion of System of Particles and Rigid Body 11. Centre of Mass, 12. Rotational Motion and Moment of Inertia, Unit 6 : Gravitation 13. Gravitation, Unit 7 : Properties of Bulk Matter 14. Elasticity, 15. Pressure of Fluids, 16. Viscosity, 17. Surface Tension, 18. Temperature and Calorimetry, 19. Transfer of Heat, Unit 8 : Thermodynamics 21. First Law of Thermodynamics, 22. Isothermal and adiabatic Processes, 23. Second Law of Thermodynamics

Author : Anonim
Publisher : SBPD Publications
Page : 1135 pages
File Size : 51,8 Mb
Release : 2020-06-17
Category : Science
ISBN : 9789381865118

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Physics Class XI by D. C. Upadhyay, Dr. J. P. Goel, Er. Meera Goyal by Anonim Pdf

(Unit) : I Physical World and Measurement 1. Physical World, 2. Units and Measurement, 3. Errors in Measurement and Significant Figures, 4. Dimensional Analysis, (Unit) : II Kinematics 5. Motion in a Straight Line (One-Dimensional Motion), 6. Vector Analysis, 7. Motion in a Plane, (Unit) : III Laws of Motion 8. Newton's Laws of Motion, 9. Friction, 10. Uniform Circular Motion, (Unit) : IV Work, Energy and Power 11. Work, Energy and Power, (Unit) : V Motion of System of Particles and Rigid Body 12. Centre of Mass, 13. Rotational Motion and Moment of Inertia, (Unit) : VI Gravitation 14. Gravitation, (Unit) : VII Properties of Bulk Matter 15. Elasticity, 16. Pressure of Fluids, 17. Viscosity, 18. Surface Tension, 19. Temperature and Calorimetry, 20. Transfer of Heat, (Unit) : VIII Thermodynamics 21. First Law of Thermodynamics, 22. Isothermal and Adiabatic Processes, 23. Second Law of Thermodynamics, (Unit) : IX Behaviour of Perfect Gas and Kinetic Theory 24. Behaviour of Perfect Gas and Kinetic Theory, (Unit) : X Oscillations and Waves 25.Oscillations, 26. Speed of Mechanical Waves and Progressive Waves, 27. Superposition of Waves : Interference and Beats, 28. Reflection of Waves : Standing Waves in Stretched String, 29. Vibrations of Air Calumns : Stationary Waves in Organ Pipes, 30. Doppler's Effect, Value Based Questions (VBQ) Chapterwise Objective Type Questions Log-Antilog and other Tables Competition Examination Paper (Solved).

Author : D. C. Upadhyay, ,Er. Meera Goyal,Dr. J. P. Goel,
Publisher : SBPD Publications
Page : 734 pages
File Size : 51,6 Mb
Release : 2016-12-17
Category : Electronic
ISBN : 9789351674085

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Physics by D. C. Upadhyay, ,Er. Meera Goyal,Dr. J. P. Goel, Pdf

Strictly according to the latest syllabus prescribed by Central Board of Secondary Education (CBSE), StateBoard and Navodaya, Kendriya Vidyalayas etc. following CBSE curriculum based on NCERT guidelines.

Author : Dr. J. P. Goel, ,D. C. Upadhyay, ,Er. Meera Goyal
Publisher : SBPD Publications
Page : 1456 pages
File Size : 55,8 Mb
Release : 2023-10-29
Category : Science
ISBN : 8210379456XXX

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NCERT Physics Class - 11 (Volume -I & II) (Bihar & Jac Board) by Dr. J. P. Goel, ,D. C. Upadhyay, ,Er. Meera Goyal Pdf

Volume - I Mathematical Tools Unit-I Physical World and Measurement 1.Physical World, 2 .Systems of Units and Measurements, 3 .Significant Figures and Error Analysis, 4. Dimensional Analysis, Unit-II Kinematics 5.Motion in a Straight Line, 6. Vector Analysis, 7. Motion in a Plane, Unit-III Laws of Motion 8.Newton's Laws of Motion, 9.Friction, 10. Uniform Circular Motion, Unit - IV Work, Energy and Power 11.Work, Energy and Power, Unit - V Motion of Rigid Body and System of Particles 12.Centre of Mass, 13.Rotational Motion and Moment of Inertia Unit - VI Gravitation 14. Gravitation, Log-Antilog Table Value Based Questions (VBQ) Sample Paper Examination Paper. Volume - II Unit - VII Properties of Bulk Matter 15.Elasticity, 16. Pressure of Fluids, 17.Viscosity, 18.Surface Tension, 19.Temperature and Calorimetry, 20.Transfer of Heat, Unit - VIII Thermodynamics 21.First Law of Thermodynamics, 22.Second Law of Thermodynamics, Unit - IX Behaviour of Perfect Gases and Kinetic Theory of Gases 23.Behaviour of Perfect Gas and Kinetic Theory, Unit - X Oscillations and Waves 24.Oscillations, 25 .Speed of Mechanical Waves, Progressive Waves, 26.Superposition of Waves : Interference and Beats, 27 .Reflection of Waves : Stationary Waves in Stretched Strings and Organ Pipes, 28. Doppler's Effect, Log-Antilog Table Value Based Questions (VBQ) Sample Paper Examination Paper.

Author : D. C. Upadhyay, Dr. J. P. Goel, Er. Meera Goyal
Publisher : RAJEEV BANSAL
Page : 784 pages
File Size : 46,7 Mb
Release : 2021-05-06
Category : Science
ISBN : 8210379456XXX

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Physics Class XII Volume - II - SBPD Publications by D. C. Upadhyay, Dr. J. P. Goel, Er. Meera Goyal Pdf

Unit-VI : (Optics) A : Ray Optics and Optical Instruments 12.Reflection and Refraction of Light, 13.Reflection of Light at Spherical Surfaces : Lenses, 14.Prism and Scattering of Light, 15 .Chromatic and Spherical Aberration, 16. Optical Instruments, Unit-VI : (Optics) B : Wave Optics 17.Nature of Light and Huygen’s Principle, 18. Interference of Light, 19. Diffraction of Light, 20. Polarisation of Light, Unit-VII : Dual Nature of Matter and Radiation 21.Particle Nature of Radiation and Wave Nature of Matter, Unit-VIII : Atoms and Nuclei 22.Atomic Physics, 23 .X–Rays, 24. Structure of the Nucleus, 25. Nuclear Energy, 26. Radioactivity, Unit-IX : Electronic Devices 27.Semiconductor Diode and Transistor, 28.Digital Electronics, Unit-X : Communication System 29.Principles of Communication Log Antilog Table Value Based Questions (VBQ) Board Examination Papers.

Author : D. C. Upadhyay, Dr. J. P. Goel, Er. Meera Goyal
Publisher : RAJEEV BANSAL
Page : 680 pages
File Size : 45,6 Mb
Release : 2021-05-06
Category : Science
ISBN : 8210379456XXX

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Physics Class XII Volume I - SBPD Publications by D. C. Upadhyay, Dr. J. P. Goel, Er. Meera Goyal Pdf

Unit-I :Electrostatics 1.Electric charge and Electric Field, 2 .Gauss’ Theorem, 3 .Electric Potential, 4. Electric Capacitance, Unit-II : Current Electricity 5.Electric Conduction and Ohm’s Law, 6. Electric Measurements, Unit-III : Magnetic Effects of Electric Current and Magnetism 7.Magnetic Effects of Electric Current, 8 .Magnetism, Unit-IV : Electromagnetic Induction and Alternating Current 9.Electromagnetic Induction, 10. Alternating Current, Unit-V : Electromagnetic Waves 11.Electromagnetic Waves, Log Antilog Table Value Based Questions (VBQ) Board Examination Papers.

Author : D. C. Upadhyay,Dr. J. P. Goel,Er. Meera Goyal
Publisher : SBPD Publications
Page : 281 pages
File Size : 50,9 Mb
Release : 2016-12-27
Category : Electronic
ISBN : 9789351678632

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NUMERICAL PHYSICS by D. C. Upadhyay,Dr. J. P. Goel,Er. Meera Goyal Pdf

Numerical Physics (With Chapterwise Questions-Answers) (Part-I)

Author : Dr. J. P. Goel, ,D. C. Upadhyay, ,Er. Meera Goyal
Publisher : SBPD Publications
Page : 1131 pages
File Size : 52,6 Mb
Release : 2022-09-30
Category : Science
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भौतिक विज्ञान (Bhautik Vigyan - Physics) Class 11 by Dr. J. P. Goel, ,D. C. Upadhyay, ,Er. Meera Goyal Pdf

(Unit) : I Physical World and Measurement 1. Physical World, 2. Units and Measurement, 3. Errors in Measurement and Significant Figures, 4. Dimensional Analysis, (Unit) : II Kinematics 5. Motion in a Straight Line (One-Dimensional Motion), 6. Vector Analysis, 7. Motion in a Plane, (Unit) : III Laws of Motion 8. Newton's Laws of Motion, 9. Friction, 10. Uniform Circular Motion, (Unit) : IV Work, Energy and Power 11. Work, Energy and Power, (Unit) : V Motion of System of Particles and Rigid Body 12. Centre of Mass, 13. Rotational Motion and Moment of Inertia, (Unit) : VI Gravitation 14. Gravitation, (Unit) : VII Properties of Bulk Matter 15. Elasticity, 16. Pressure of Fluids, 17. Viscosity, 18. Surface Tension, 19. Temperature and Calorimetry, 20. Transfer of Heat, (Unit) : VIII Thermodynamics 21. First Law of Thermodynamics, 22. Isothermal and Adiabatic Processes, 23. Second Law of Thermodynamics, (Unit) : IX Behaviour of Perfect Gas and Kinetic Theory 24. Behaviour of Perfect Gas and Kinetic Theory, (Unit) : X Oscillations and Waves 25.Oscillations, 26. Speed of Mechanical Waves and Progressive Waves, 27. Superposition of Waves : Interference and Beats, 28. Reflection of Waves : Standing Waves in Stretched String, 29. Vibrations of Air Calumns : Stationary Waves in Organ Pipes, 30. Doppler's Effect, Value Based Questions (VBQ) Chapterwise Objective Type Questions Log-Antilog and other Tables Competition Examination Paper (Solved).

Author : Dr. J. P. Goel, ,D. C. Upadhyay,,Er. Meera Goyal
Publisher : SBPD Publicatios
Page : 1135 pages
File Size : 55,6 Mb
Release : 2022-05-24
Category : Science
ISBN : 8210379456XXX

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भौतिक विज्ञान (Bhautik Vigyan - Physics) Class 11- SBPD Publications by Dr. J. P. Goel, ,D. C. Upadhyay,,Er. Meera Goyal Pdf

Unit : I Physical World and Measurement 1.Physical World, 2. Units and Measurement, 3 .Errors in Measurement and Significant Figures, 4. Dimensional Analysis, Unit : II Kinematics 5.Motion in a Straight Line (One-Dimensional Motion), 6 .Vector Analysis, 7. Motion in a Plane, Unit : III Laws of Motion 8.Newton's Laws of Motion, 9. Friction, 10. Uniform Circular Motion, Unit : IV Work, Energy and Power 11.Work, Energy and Power, Unit : V Motion of System of Particles and Rigid Body 12.Centre of Mass, 13. Rotational Motion and Moment of Inertia, Unit) : VI Gravitation 14. Gravitation, Unit : VII Properties of Bulk Matter 15.Elasticity, 16. Pressure of Fluids, 17. Viscosity, 18. Surface Tension, 19. Temperature and Calorimetry, 20.Transfer of Heat, Unit) : VIII Thermodynamics 21.First Law of Thermodynamics, 22 .Isothermal and Adiabatic Processes, 23 .Second Law of Thermodynamics, Unit) : IX Behaviour of Perfect Gas and Kinetic Theory 24.Behaviour of Perfect Gas and Kinetic Theory, Unit) : X Oscillations and Waves 25.Oscillations, 26. Speed of Mechanical Waves and Progressive Waves, 27. Superposition of Waves : Interference and Beats, 28. Reflection of Waves : Standing Waves in Stretched String, 29. Vibrations of Air Calumns : Stationary Waves in Organ Pipes, 30. Doppler's Effect, Value Based Questions (VBQ) Log-Antilog and other Tables Competition Examination Paper (Solved) Examination Papers.

Author : D. C. Upadhyay, ,Dr. J. P. Goel, ,Er. Meera Goyal
Publisher : SBPD Publications
Page : 1132 pages
File Size : 53,6 Mb
Release : 2022-03-24
Category : Science
ISBN : 8210379456XXX

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भौतिक विज्ञान (Bhautik Vigyan - Physics) Class XI - SBPD Publications by D. C. Upadhyay, ,Dr. J. P. Goel, ,Er. Meera Goyal Pdf

Unit : I Physical World and Measurement 1.Physical World, 2. Units and Measurement, 3 .Errors in Measurement and Significant Figures, 4. Dimensional Analysis, Unit : II Kinematics 5.Motion in a Straight Line (One-Dimensional Motion), 6 .Vector Analysis, 7. Motion in a Plane, Unit : III Laws of Motion 8.Newton's Laws of Motion, 9. Friction, 10. Uniform Circular Motion, Unit : IV Work, Energy and Power 11.Work, Energy and Power, Unit : V Motion of System of Particles and Rigid Body 12.Centre of Mass, 13. Rotational Motion and Moment of Inertia, Unit) : VI Gravitation 14. Gravitation, Unit : VII Properties of Bulk Matter 15.Elasticity, 16. Pressure of Fluids, 17. Viscosity, 18. Surface Tension, 19. Temperature and Calorimetry, 20.Transfer of Heat, Unit) : VIII Thermodynamics 21.First Law of Thermodynamics, 22 .Isothermal and Adiabatic Processes, 23 .Second Law of Thermodynamics, Unit) : IX Behaviour of Perfect Gas and Kinetic Theory 24.Behaviour of Perfect Gas and Kinetic Theory, Unit) : X Oscillations and Waves 25.Oscillations, 26. Speed of Mechanical Waves and Progressive Waves, 27. Superposition of Waves : Interference and Beats, 28. Reflection of Waves : Standing Waves in Stretched String, 29. Vibrations of Air Calumns : Stationary Waves in Organ Pipes, 30. Doppler's Effect, Value Based Questions (VBQ) Log-Antilog and other Tables Competition Examination Paper (Solved) Examination Papers`

Author : Dr. J. P. Goel
Publisher : SBPD Publications
Page : 178 pages
File Size : 53,9 Mb
Release : 2016-12-17
Category : Electronic
ISBN : 9789351679721

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Lab Manual Latest Edition by Dr. J. P. Goel Pdf

Lab. E- Manual Physics (For XIIth Practicals) A. Every student will perform 10 experiments (5 from each section) & 8 activities (4 from each section) during the academic year. Two demonstration experiments must be performed by the teacher with participation of students. The students will maintain a record of these demonstration experiments. B. Evaluation Scheme for Practical Examination : One experiment from any one section 8 Marks Two activities (one from each section) (4 + 4) 8 Marks Practical record (experiments & activities) 6 Marks Record of demonstration experiments & Viva based on these experiments 3 Marks Viva on experiments & activities 5 Marks Total 30 Marks Section A Experiments 1. To determine resistance per cm of a given wire by plotting a graph of potential difference versus current. 2. To find resistance of a given wire using metre bridge and hence determine the specific resistance of its material. 3. To verify the laws of combination (series/parallel) of resistances using a metre bridge. 4. To compare the emf of two given primary cells using potentiometer. 5. To determine the internal resistance of given primary cells using potentiometer. 6. To determine resistance of a galvanometer by half-deflection method and to find its figure of merit. 7. To convert the given galvanometer (of known resistance and figure of merit) into an ammeter and voltmeter of desired range and to verify the same. 8. To find the frequency of the a.c. mains with a sonometer. Activities 1. To measure the resistance and impedance of an inductor with or without iron core. 2. To measure resistance, voltage (AC/DC), current (AC) and check continuity of a given circuit using multimeter. 3. To assemble a household circuit comprising three bulbs, three (on/off) switches, a fuse and a power source. 4. To assemble the components of a given electrical circuit. 5. To study the variation in potential drop with length of a wire for a steady current. 6. To draw the diagram of a given open circuit comprising at least a battery, resistor/rheostat, key, ammeter and voltmeter. Mark the components that are not connected in proper order and correct the circuit and also the circuit diagram. Section B Experiments 1. To find the value of v for different values of u in case of a concave mirror and to find the focal length. 2. To find the focal length of a convex lens by plotting graphs between u and v or between 1/u and 1/u. 3. To find the focal length of a convex mirror, using a convex lens. 4. To find the focal length of a concave lens, using a convex lens. 5. To determine angle of minimum deviation for a given prism by plotting a graph between angle of incidence and angle of deviation. 6. To determine refractive index of a glass slab using a travelling microscope. 7. To find refractive index of a liquid by using (i) concave mirror, (ii) convex lens and plane mirror. 8. To draw the I-V characteristic curve of a p-n junction in forward bias and reverse bias. 9. To draw the characteristic curve of a zener diode and to determine its reverse break down voltage. 10. To study the characteristics of a common-emitter npn or pnp transistor and to find out the values of current and voltage gains. Activitie 1. To study effect of intensity of light (by varying distance of the source) on a L.D.R. 2. To identify a diode, a LED, a transistor and IC, a resistor and a capacitor from mixed collection of such items. 3. Use of multimeter to (i) identify base of transistor. (ii) distinguish between npn and pnp type transistors. (iii) see the unidirectional flow of current in case of a diode and a LED. (iv) check whether a given electronic component (e.g. diode, transistor or I C) is in working order. 4. To observe refraction and lateral deviation of a beam of light incident obliquely on a glass slab. 5. To observe polarization of liquid using two Polaroids. 6. To observe diffraction of light due to a thin slit. 7. To study the nature and size of the image formed by (i) convex lens, (ii) concave mirror, on a screen by using a candle and a screen (for different distances of the candle from the lens/mirror). 8. To obtain a lens combination with the specified focal length by using two lenses from the given set of lenses. Suggested Investigatory Projects 1. To investigate whether the energy of a simple pendulum is conserved. 2. To determine the radius of gyration about the centre of mass of a metre scale as a bar pendulum. 3. To investigate changes in the velocity of a body under the action of a constant force and determine its acceleration. 4. To compare effectiveness of different materials as insulators of heat. 5. To determine the wavelengths of laser beam by diffraction. 6. To study various factors on which the internal resistance/emf of a cell depends. 7. To construct a time-switch and study dependence of its time constant on various factors. 8. To study infrared radiations emitted by different sources using photo-transistor. 9. To compare effectiveness of different materials as absorbers of sound. 10. To design an automatic traffic signal system using suitable combination of logic gates. 11. To study luminosity of various electric lamps of different powers and make. 12. To compare the Young’s modulus of elasticity of different specimens of rubber and also draw their elastic hysteresis curve. 13. To study collision of two balls in two dimensions. 14. To study frequency response of : (i) a resistor, an inductor and a capacitor, (ii) RL circuit, (iii) RC circuit, (iv) LCR series circuit.