FREQUENTLY ASKED QUESTIONS (FAQs) PUBLIC EXAMINATION. (From March 2006 to September 2015) 1. ELECTROSTATICS PART - II

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1 FREQUENTLY ASKED QUESTIONS (FAQs) PUBLIC EXAMINATION (From March 2006 to September 205). ELECTROSTATICS Coulomb's law 6 2 Safer inside a car during lightning - why? 6 3 State Gauss's law 5 4 Electric potential at a point 4 5 Electric polarisation 4 6 Corona discharge 4 7 Non-polar molecules 3 8 Define one coulomb 3 9 Dipole and dipole moment 3 0 Uses of capacitors 3 Electric flux - define 2 2 Polar molecules 2 3 Define capacitance 2 4 Properties of Electric lines of force 2 5 Microwave oven 2 6 Additive law of charges 7 What is meant by Electro static shielding 8 Problem Question.7 (i) 2 9 Problem Question.8,.2,.59 (i) (each) 20 New created problems 2 Properties of electric lines of force 9 2 Torque experienced by a dipole 3 3 Electric potential energy (System of 2 charges) 2 4 Problem Que..59,.6, Capacitance of parallel plate capacitor 2 6 Energy stored in a capacitor 2

2 7 Cap. C of parallel plate capacitor - dielectric slab 8 Capacitors in series 9 What is capacitor? Explain principle. 0 Problem Que..3,.56,.9,.0,.49 PART - IV Dipole - Electric field at axial line 7 2 Potential at a point due to a dipole - Special cases 3 Van De Graff generator 5 4 Dipole - Electric field at an equatorial line 4 5 Gauss's law and application 3 6 Capacitances in series and parallel 3 7 Explain Principle of capacitor. Capacitance of Parallel plate capacitor. 2. CURRENT ELECTRICITY 7 Define drift velocity 0 2 State Kirchoff's laws 8 3 Ohm's law 7 4 Difference betweenelectrical energy and power 6 5 Applications of Super conductors 6 6 Differentiate PD and EMF 6 7 Faraday's laws of electrolysis 5 8 Define mobility 4 9 Temperaure coefficient of resistance 3 0 Applications of secondary cells 3 Changes during Transition Temperature 2 2 Define Resistivity 2 3 Define critical temperature 4 What is Super conductivity 2

3 5 Problem Question Problem Question Problem Question 2.32, 2.39 (each) 2 8 Prob Qns 2.6, 2.34, 2.38, 2.3, 2.43 (each) 9 New created problems 3 Applications of superconductors 7 2 Balanced condition of Wheatstone's bridge 6 3 Internal resistance using voltmeter 6 4 Construction and working of Daniel cell 5 5 Comparision of e.m.fs potentiometer 5 6 Verification of Faraday s II law of electrolysis 4 7 Construction and working of Leclanchee cell 3 8 Principle of a potentiometer 3 9 Faradays I law verification 2 0 Resistances in parallel 2 State and explain Kirchoff s second law 2 Define Mobility, I V relation 3 Resistance Vs Temp. expression and graph 4 Lead Acid accumulator 5 Wheatstone s Bridge 6 Problem Que. 2.0, 2.33 (each) 3 7 Problem Que. 2., 2.30, 2.44 (each) 2 8 Problem Que. 2.2, 2.8, 2.9, 2.2, 2.34 (each) 3. EFFECTS 0F ELECTRIC CURRENT Peltier coeficient 4 2 Define one ampere 4 3

4 3 Limitation of cyclotron 3 4 Nichrome is used as heating element - why? 3 5 Ampere circuital law 2 6 How to increase sensitivity of a galvanometer 2 7 Define Thomson coefficient 2 8 Fleming's left hand rule 2 9 Differentiate Peltier and Joule heating effect 0 Neutral temperature and inversion temperature Tangent law 2 Conversion of Galvan into voltmeter ammeter 3 Problem Question 3.2, 3.4, 3.2 (each) Conversion of galvanometer into an ammeter 3 2 Conversion of galvanometer into an voltmeter 3 3 Special features of Lorentz force 2 4 State and explain Biot - Savart law 5 Principle and Construction of TG 6 Problem Que Problem Que. 3.3, 3.35 (each) 3 8 Problem Que. 3.3, 3.30, 3.36 (each) 2 9 Problem Que. 3.6, 3.7, 3., 3.4, 3.5, 3.7, 3.8, 3.39 (each) PART - IV Biot - Savart law - B due to straight conductor 7 2 Cyclotron 5 3 Force on a current carrying condu. In mag. Field 4 4 Mag. Induction - circular coil 4 5 Motion of charged particle in uniform mag. Field 4 6 Joule's law of heating 2 7 Tangent Galvanometer 8 Ampere's circuital law + long solenoid 9 Force bet. Current carrying parallel conductor 4

5 4. ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT Quality factor 6 2 Fleming right hand rule 5 3 Faradays' law of Electro magnetic induction 5 4 Methods of producing induced emf 4 5 r.m.s value of AC 4 6 Lenz's law 3 7 Define self inductance 2 8 Efficiency of a transformer 2 9 What is meant by Electro magnetic induction 0 AF choke coil and RF choke coil DC ammeter doesn't measure AC 2 Capacitor block dc why? 3 Define - unit of self induction 4 Define- Coefficient of self induction & its unit 5 Problem Question Problem Question Problem Question 4.4, Problem Question 4., 4.3 (i), 4.5, 4.55 (each) 9 New created problems 3 Power losses in a transformer 9 2 Induced EMF by changing the are of the coil 8 3 Application of Eddy current 3 4 AC Circuit having Inductor only 2 5 Mutual induction of 2 long solenoid 2 6 AC Circuit having Resistor only 2 7 Self induction of long solenoid 8 EM induction Faraday's law and Lenz's law 5

6 9 Energy associated with an inductor 0 Problem Que. 4.5 PART - IV AC Generator (single phase) 0 2 EMF induced by changing orientation of coil 8 3 RLC series circuit, V, Z, 6 4 Transformer 3 5 Eddy current applications 6 AC circuit with inductance 7 AC circuit with capacitor 5. ELECTROMAGNETIC WAVES AND WAVE OPTICS 6 Tyndall scattering 6 2 Specific rotation 4 3 Huygen's principle 4 4 Sky look blue in colour - why? 3 5 Factors of optical rotation 3 6 Difference bet. Fresnel and Fraunhofer diffraction 2 7 Centre of newton's ring is black - why? 2 8 Define Optical axis 2 9 Conditions for Total internal reflection 2 0 Application of IR rays Brewster's law 2 Emission and absorption spectra 3 Fraunhofer lines define 4 Band emission spectra 5 Uses of UV rays 6 Conditions for sustained interference

7 7 3 characteristics of EM wave 8 What is Uniaxial, Biaxial crystals? Give Examples. 9 Problem Question 5.4, 5.5, 5.8, 5.45 (each) 3 20 Problem Question 5.2, 5.49 (each) 2 2 Problem Question 5.6, 5.40 (each) State and prove Brewster's law 9 2 Write a note on Nicol prism 3 3 Pile of plates 2 4 Radius of nth ring in newton rings experiment 2 5 Diff. bet. Interference and diffraction 6 Problem Que Problem Que. 5.3, 5.47 (each) 3 8 Problem Que Problem Que. 5., 5.4, 5.5, 5.8, 5.42, 5.44, 5.45, 5.48 (each) 9 PART - IV Young's double slit experiment - Exp for Bandwidth 2 Emission and Absorption spectra 7 3 Raman effect 7 4 Total internal reflection 3 5 Interference transparent film 2 6 Huygen's principle - explain law of reflection ATOMIC PHYSICS characteristics of LASER 6 2 Mosley's law 5 3 Medical applications of Laser 4 4 Conditions for LASER action 4 7

8 5 Ionisation potential / Ionisation energy 4 6 Applications of Mosley's law 4 7 Conclusion from Laue's experiment 3 8 Principle of Millikan's oil drop experiment 3 9 Industrial applications of Laser 0 3 Properties of cathode rays Hologram and its applications 2 Limitations of Rutherford model 3 Limitations of sommerfeld model 4 Distinguish Soft & Hard X - rays 5 Problem Question Problem Question 6.49, 6.52 (each) 3 7 Problem Question Problem Question 6., 6.5, 6.7(i), 6.7(ii), 6.45(i) (each) 8 9 New created problem Explain the spectral series of hydrogen atom 6 2 Origin of characteristic X-ray spectrum 4 3 Obtain Brag's law 4 4 Characteristics of X - rays 4 5 Properties of cathode rays 3 6 Laue's experiment 2 7 Radius of nth orbit of Hydrogen 8 Energy of nth orbit of Hydrogen atom 9 Properties of Canal rays 0 Problem Que. 6.4, 6.5, 6.8, 6.45 (each) PART - IV JJ Thomson e/m experiment 8 2 Ruby laser 7 3 Radius of n-th orbit of hydrogen atom 6 4 He Ne laser 4 5 Millikan s oil drop experiment 2 8

9 6 Bragg s law & Bragg s spectrometer 7 Bragg s spectrometer & Charact. X-ray spectrum 7. DUAL NATURE OF RADIATION AND MATTER - RELATIVITY PART II Applications of photo electric cells 6 2 Postulates of special theory of relativity 4 3 Limitations of electron microscope 4 4 Inertial and non-inertial frames of reference 3 5 Stopping potential 3 6 Applications of electron microscope 2 7 Define Threshold frequency 2 8 Define Concept of time 9 What is photoelectric cell? Its types 0 Problem Question Problem Question 7.6 (i) 2 New created problem De Broglie wavelength of matter waves 9 2 Derive Einstein's photoelectric equation 8 3 Explain length contraction 8 4 Applications of photoelectic cells 7 5 State the laws of photoelectric emission 5 6 Time dilation 3 7 Working of photo emissive cell 2 8 Wave mechanical concept of atom 9 Uses and limitations of Elect. Microscope 0 De Broglie wavelength of electron E = mc 2 relation 9

10 2 Problem Que Problem Que. 7.2, 7.8 (each) 3 4 Problem Que Problem Que. 7.4, 7.5, 7.34, 7.40, 7.42 (each) 8. NUCLEAR PHYSICS Define - curie 7 2 Properties of neutrons 5 3 Pair production- annihilation of matter 4 4 Cosmic rays 3 5 Leptons 3 6 Propertoes of nuclear forces 2 7 Uses of nuclear reactor 2 8 Define - Rontgen 2 9 Alpha decay 2 0 Define Artificial radio activity 2 Critical volume and critical mass 2 2 Breeder reactor 2 3 Results of binding energy per nucleon graph 4 Control rods in a nuclear reactor 5 Mass defect 6 Binding energy 7 Neutrons on the basis of kinetic energy 8 Proton - Proton cycle 9 State Radio active disintegration law (or) Rutherford Soddy law 20 Methods of producing artificial radio isotopes 2 Precautions in radioactive lab 0

11 22 Problem Question 8.52, 8.57 (each) 4 23 Problem Question Problem Question 8.47, 8.60 (each) 25 New created problems 2 Cosmic ray shower 2 2 Latitude effect of cosmic rays 2 3 Properties of alpha rays 2 4 Properties of neutrons 5 Properties of Gamma rays 6 Soddy and Fajan's displacement laws 7 Biological hazards 8 BE curve 9 Principle and working of atom bomb 0 Carbon Nitrogen cycle in stellar energy Problem Que Problem Que. 8.0, 8.53 (each) 3 3 Problem Que. 8.2, 8.5, 8.7, 8.9 (each) 2 4 Problem Que. 8.6, 8.49, 8.5, 8.54, 8.56, 8.57, 8.59 (each) 5 New created problem PART - IV Bainbridge mass spectrometer 2 Geiger - Muller counter 7 3 Radioactive law of Disintegration 6 4 Lattitude and altitude effect of cosmic rays 4 5 Nuclear reactor 6 Discovery & properties of neutrons

12 9. SEMICONDUCTOR DEVICES AND THEIR APPLICATIONS Advantages of negative feedback 7 2 Extrinsic semiconductor 6 3 De-Morgan's theorem 6 4 Zener breakdown 5 5 Advantages of IC's 5 6 Barkausen condition 5 7 Bandwidth of an amplifier 4 8 What is meant by IC 4 9 Zener diode & symbol 3 0 What is rectification 3 Methods of Doping 3 2 What is LED and its uses, symbol 3 3 Define Input impedance 2 4 Define Output impedance 2 5 NAND and NOR are universal gates why? 2 6 Characteristics of OP-AMP 2 7 Applications of CRO 2 8 Intrinsic semiconductor 2 9 What is doping 20 Energy level diagram of N type and P type 2 biasing of a transistor 22 Distinguish Avalanche and Zener breakdown 23 Distinguish Analog and digital signal 24 Circuit diagram of OP-AMP as summing amp Circuit diagram of NPN transistor in CE mode 2 26 Essential parts of LC oscillator & block diagram 2 2

13 27 Circuit diagram of AND gate using diodes 2 28 Circuit diagram of OR gate using diodes 29 Circuit diagram of OP-AMP as inverting amplifier 30 Circuit diagram of OP-AMP as difference amplifier 3 Circuit diagram of NPN transistor in CC mode 32 Problem Question Problem Question Problem Question 9.56, 9.60 (each) 3 35 Problem Question 9.4, 9.8(i), 9.52 (each) 2 36 Problem Question 9.2, 9.5, 9.8(iii), 9.5, 9.55, 9.57, 9.60 (each) 37 New created problems 7 State and prove De Morgan's theorem 8 2 Half wave rectifier 5 3 Transistor as a switch 3 4 Voltage divider bias 2 5 relation 2 6 Zener diode as voltage regulator 2 7 Multimeter as ohm meter 2 8 OP AMP as a summing Ampifier 9 Frequency curve of single stage CE ampl. 0 AND gate - function, using electronic and diode Circuit diagram and pin configuration of OP-AMP 2 Bridge rectifier 3 Problem Que. 9.2 PART - IV Colpitt's oscillator 8 2 Bridge rectifier 7 3 CE single stage amplifier 4 4 NPN CE transistor characteristics 3 5 Def. Feedback. Gain of the amp.with - ve feed back. 6 Inverting and Non-inverting OP-AMP 2 3 3

14 7 Summing amplifier 2 8 Difference amplifier 0. COMMUNICATION SYSTEMS Skip distance 9 2 Modulation factor 7 3 Advantages of digital communication 3 4 FAX and its applications 2 5 Advantages of fiber optic communication 2 6 Amplitude of modulation 7 Necessity of modulation 8 Applications of RADAR 9 Advantages of FM 0 Different type of radiowave propagation What is interlaced scanning 2 What is Skip Zone? Explain the function of FM transmitter 6 2 Merits and demerits of digital communication 5 3 Principle of RADAR and write it's applications 4 4 Function of AM radio transmitter 4 5 Optice fibre and it's advantages 3 6 Merits and demerits of satellite communication 3 7 FM superhetrodyne receiver 2 8 Space wave propagation 9 Block diagram of RADAR 0 Problem Que. 0. 4

15 PART - IV AM wave analysis and its spectrum 9 2 B/W TV receiver 7 3 Super hetrodyne AM Radio receiver 4 4 RADAR - transmission and reception 4 5 B/W TV transmitter 4 6 Vidicon camera tube 2 Prepared by : V.K.Baskaran, M.Sc., M.Ed., B.T. Assistant, P.U. Middle School, Moolimangalam, Karur Dist Cell : , baskaranphysics@gmail.com 5

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+2 Physics Important FIVE marks Questions. English Medium : Volume I. (From - March: 2006 to Oct : 2015)

+2 Physics Important FIVE marks Questions English Medium : Volume I (From - March: 2006 to Oct : 2015) +2 Physics Unit -1 Electrostatics - Five marks questions 1. Write the properties of electric lines