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PHYSICS

CBSE

SAMPLEPAPERSSAMPLESAMPLEPAPERSPAPERS

COVERS

BOARD PAPERS

(SOLVED)

2016

380.00

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CLASS—XIIPHYSICS (Theory)

One Paper Time : 3 Hours Marks : 70

No. of Periods Marks

Unit I Electrostatics 2215

Unit II Current Electricity 20

Unit III Magnetic effect of current and Magnetism 2216

Unit IV Electromagnetic Induction and Alternatingcurrents 20

Unit V Electromagnetic Waves 0417

Unit VI Optics 25

Unit VII Dual Nature of Radiation and Matter 0810

Unit VIII Atoms and Nuclei 14

Unit IX Electronic Devices 1512

Unit X Communication Systems 10

Total 160 70

Unit I : Electrostatics 22 PeriodsChapter 1 : Electric Charges and Fields

Electric Charges; Conservation of charge, Coulomb’s law—force between twopoint charges, forces between multiple charges; superposition principle andcontinuous charge distribution.Electric field, electric field due to a point charge, electric field lines, electricdipole, electric field due to a dipole, torque on a dipole in uniform electric field.Electric flux, statement of Gauss’s theorem and its applications to find fielddue to infinitely long straight wire, uniformly charged infinite plane sheetand uniformly charged thin spherical shell (field inside and outside).

Chapter 2 : Electrostatic Potential and capacitanceElectric potential, potential difference, electric potential due to a point charge,a dipole and system of charges; equipotential surfaces, electrical potentialenergy of a system of two point charges and of electric dipole in an electrostaticfield.Conductors and insulators, free charges and bound charges inside a conductor.Dielectrics and electric polarisation, capacitors and capacitance, combination

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of capacitors in series and in parallel, capacitance of a parallel plate capacitorwith and without dielectric medium between the plates, energy stored in acapacitor.

Unit II : Current Electricity 20 PeriodsChapter 3 : Current Electricity

Electric current, flow of electric charges in a metallic conductor, drift velocity,mobility and their relation with electric current; Ohm’s law, electricalresistance, V-I characteristics (linear and non-linear), electrical energy andpower, electrical resistivity and conductivity. Carbon resistors, colour code forcarbon resistors; series and parallel combinations of resistors; temperaturedependence of resistance.Internal resistance of a cell, potential difference and emf of a cell, combinationof cells in series and in parallel, Kirchhoff ’s law and simple applications.Wheatstone bridge, metre bridge.Potentiometer — principle and its applications to measure potential differenceand for comparing emf of two cells; measurement of internal resistance of acell.

Unit III : Magnetic Effects of Current and Magnetism 22 PeriodsChapter 4 : Moving charges and Magnetism

Concept of magnetic field, Oersted’s experiment.Biot-Savart law and its application to current carrying circular loop.Ampere’s law and its applications to infinitely long straight wire. Straightand toroidal solenoids (only qualitative treatment), Force on a moving chargein uniform magnetic and electric fields. Cyclotron.Force on a current-carrying conductor in a uniform magnetic field. Force betweentwo parallel current carrying conductors—definition of ampere. Torqueexperienced by a current loop in uniform magnetic field; moving coilgalvanometer—its current sensitivity and conversion to ammeter and voltmeter.

Chapter 5 : Magnetism and MatterCurrent loop as a magnetic dipole and its magnetic dipole moment. Magneticdipole moment of a revolving electron. Magnetic field intensity due to amagnetic dipole (bar magnet) along its axis and perpendicular to its axis.Torque on a magnetic dipole (bar magnet) in a uniform magnetic field; barmagnet as an equivalent solenoid, magnetic field lines; Earth’s magnetic fieldand magnetic elements. Para-, dia- and ferro-magnetic substances, withexamples. Electromagnets and factors affecting their strengths. Permanentmagnets.

Unit IV : Electromagnetic Induction and Alternating Currents 20 PeriodsChapter 6 : Electromagnetic Induction

Electromagnetic induction; Faraday’s law, induced emf and current; Lenz’slaw, Eddy currents.Self and mutual induction.

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Chapter 7 : Alternating CurrentsAlternating currents, peak and rms value of alternating current/voltage;reactance and impedance; LC oscillations (qualitative treatment only), LCRseries circuit, resonance; power in AC circuits, wattless current.

AC generator and transformer.

Unit V : Electromagnetic Waves 04 Periods

Chapter 8 : Electromagnetic Waves

Basic idea of displacement current, Electromagnetic waves, theircharacteristics, their transverse nature (qualitative ideas only).

Electromagnetic spectrum (radio waves, microwaves, infrared, visible,ultraviolet, X-rays, gamma rays) including elementary facts about their uses.

Unit VI : Optics 25 Periods

Chapter 9 : Ray Optics and Optical Instruments

Ray optics : Reflection of light, spherical mirrors, mirror formula. Refractionof light, total internal reflection and its applications, optical fibres, refractionat spherical surfaces, lenses, thin lens formula, lens-maker’s formula.Magnification, power of a lens, combination of thin lenses in contact,combination of a lens and a mirror. Refraction and dispersion of light througha prism.

Scattering of light — blue colour of sky and reddish appearance of the sun atsunrise and sunset.

Optical instruments : Microscopes and astronomical telescopes (reflectingand refracting) and their magnifying powers.

Chapter 10 : Wave Optics

Wave optics : Wave front and Huygens’ principle, reflection and refraction ofplane wave at a plane surface using wave fronts. Proof of laws of reflectionand refraction using Huygens’ principle. Interference, Young’s double slitexperiment and expression for fringe width, coherent sources and sustainedinterference of light. Diffraction due to a single slit, width of central maximum.Resolving power of microscopes and astronomical telescope. Polarisation, planepolarised light; Brewster’s law, uses of plane polarised light and Polaroids.

Unit VII : Dual Nature of Radiation and Matter 08 Periods

Chapter 11 : Dual Nature of Radiation and Matter

Dual nature of radiation. Photoelectric effect, Hertz and Lenard’s observations;Einstein’s photoelectric equation—particle nature of light.

Matter waves—wave nature of particles, de-Broglie relation. Davisson-Germerexperiment (experimental details should be omitted; only conclusion shouldbe explained).

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Unit VIII : Atoms and Nuclei 14 Periods

Chapter 12 : Atoms

Alpha-particle scattering experiment; Rutherford’s model of atom; Bohr model,energy levels, hydrogen spectrum.

Chapter 13 : Nuclei

Composition and size of nucleus, Radioactivity, alpha, beta and gammaparticles/rays and their properties; radioactive decay law.

Mass-energy relation, mass defect; binding energy per nucleon and its variationwith mass number; nuclear fission and fusion.

Unit IX : Electronic Devices 15 Periods

Chapter 14 : Semiconductor Electronics: Materials, Devices and SimpleCircuits

Energy bands in conductors, semiconductors and insulators (Qualitative ideasonly)

Semiconductor diode–I-V characteristics in forward and reverse bias, diode asa rectifier;

Special purpose p-n junction diodes : LED, photodiode, solar cell and Zenerdiode and their characteristics, zener diode as a voltage regulator.

Junction transistor, transistor action, characteristics of a transistor; transistoras an amplifier (common emitter configuration) basic idea of analog and digitalsingals, Logic gates (OR, AND, NOT, NAND and NOR).

Unit X : Communication Systems 10 Periods

Chapter 15 : Communication Systems

Elements of a communication system (block diagram only); bandwidth of signals(speech, TV and digital data); bandwidth of transmission medium. Propagationof electromagnetic waves in the atmosphere, sky and space wave propagation,setellite communication. Need for modulation, amplitude modulation.

PRACTICALS (Total Periods 60)

The record to be submitted by the students at the time of their anualexamination has to include :

• Record of at least 15 Experiments [with a miniumu of 6 from each section],to be performed by the students.

• Record of at least 5 Activities [with a minimum of 2 each from section Aand section B], to be demonstrated by the teachers.

• The Report of the project to be carried out by the students.

Physics-syl-XII.pmd 7/14/2016, 6:08 PM4

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Physics-syl-XII.pmd 6/9/2015, 2:58 PM5

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QUESTION WISE BREAK UP

Type of Question Mark per Question Total No. of Questions Total Marks

VSA 1 5 05

SA-I 2 5 10

SA-II 3 12 36

VBQ 4 1 04

LA 5 3 15

Total 26 70

1. Internal Choice: There is no overall choice in the paper. However, there isan internal choice in one question of 2 marks weightage, one question of 3marks weightage and all the three questions of 5 marks weightage.

2. The above template is only a sample. Suitable internal variations may bemade for generating similar templates keeping the overall weightage todifferent form of questions and typology of questions same.

Physics-syl-XII.pmd 6/9/2015, 2:58 PM6

CONTENTS

CBSE Question Papers 2016 (Delhi) Solved 1 – 20

CBSE Question Papers 2016 (All India) Solved 21 – 40

CBSE Question Papers 2015 (Delhi) Solved 1 – 23

CBSE Question Papers 2015 (All India) Solved 24 – 44

CBSE Question Papers 2014 (Delhi) Solved 1 – 20

CBSE Question Papers 2014 (All India) Solved 21 – 42

Sample Question Paper (Solved) S-1 – S-20

(Based on the latest CBSE Guidelines)

Unitwise Important Examination Style Questions (Solved)

1 – 392

1. Electrostatics 2 – 52

2. Current Electricity 53 – 87

3. Magnetic Effects and Magnetism 88 – 140

4. Electromagnetic Induction and AC 141 – 191

5. Electromagnetic Waves 192 – 203

6. Optics 204 – 274

7. Dual Nature of Matter 275 – 294

8. Atoms and Nuclei 295 – 325

9. Electronic Devices 326 – 367

10. Communication Systems 368 – 378

● Value Based Questions 379 – 392

MODEL QUESTION PAPERS FOR PRACTICE M-1 – M-36

Model Question Paper–1 M-1 – M-5

Model Question Paper–2 M-6 – M-9

Model Question Paper–3 M-10 – M-13

Model Question Paper–4 M-14 – M-17

Model Question Paper–5 M-18 – M-21

Model Question Paper–6 M-22 – M-24

Model Question Paper–7 M-25 – M-27

Model Question Paper–8 M-28 – M-30

Model Question Paper–9 M-31 – M-33

Model Question Paper–10 M-34 – M-36

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Content-Physics - XII (2012) (Final).pmd 7/14/2016, 3:09 PM1

MBD Sure Shot CBSE Sample PapersSolved Class 12 Physics 2017

Publisher : MBD GroupPublishers

ISBN : 9789351850939 Author : Panel Of Experts

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