"Om Sai Ram "
SPECTRUM CLASSES
BEST QUESTIONS FOR CLASS XII BOARD PAPER 2017
Optics (ray and wave optics 7 + 7=14 marks)
Q.1 Derive expression for magnification of compound microscope , Astronomical telescope and solve numerical on them.
Q.2 Explain cassegrain telescope with diagram , difference between reflector and reflecting type telescope
Q.3 Derive expression for lens maker formula , what is effect on F when we dip in water , a high density medium , cut horizontally and vertically.
Q.4 Explain TIR with its conditions , working of optical fiber , porro prism and numerical on it.
Q.5 Derive thin lens formula , mirror formula , and solve numericals of combination of mirror and lens.
Q.6 Explain Huygens principle , prove law of reflection and snell’s law by it , explain wave front and its types.
Q.7 Define coherent sources and condition for sustained interference , explain youngs double slit exp , with derivation of fringe width and logical question on it with numerical.
Q.8 Explain brewester’s law , malus law with numerical , polarized light and prove that light is a transverse wave , how goggle polarized light.
Q.9 Explain diffraction with its condition , difference between interference and diffraction , explain diffraction by single slit and numericals on it .
Q.10 Explain Prism Formula , its graph , condition of minimum deviation , numerical on it , dispersion , why sky blue . how rainbow form .
Modern Physics(dual nature , atom and nuclei, semiconductor , communication 3+7+7+5=22)
Q.11 Explain photoelectric effect , threshold energy , threshold frequency and its all graph given in ncert.
Q.12 Explain Einstein photo electric equation and Emissions of photo Electron s .
Q.13 Derive expression for wavelength of debroglie wave for matter wave and electron and logical question on it and prove it by using davission germer exp.
Q.14 Explain Rutherford model , distance of closest approach with its drawback and bohr’s postulate and derive expression for bohr radius , velocity & energy
Q.15 Explain mass defect , Binding energy , draw BE/Nucleon curve and solve numericals on it.
Q.16 Derive radioactive decay , alpha, beta &gamma decay,half life , average life ,activity &difference b/w nuclear fission & fusion , antineutrino not detected.
Q.17 explain doping with its type , depletion layer , V-I Characterstic for pn junction diode , effect on depletion in reverse and forward bias .
Q.18 Explain valence band theory for conductor , insulator and semiconductor , why Carbon is not semiconductor ,how R change with temp in Semiconductors.
Q.19 Explain working of pn junction diode as a half &full wave rectifier , LED and solar cell with its graph .
Q.20 Explain Transistor in CE mode with its input and output V-I graph and how it is used as an amplifier in CE mode , exp active , saturation and cutoff region.
Q.21 Explain Zener diode , how it work as a stabilizer , explain zener breakdown , avalanche breakdown and why it is heavily doped.
Q.22 Explain analog and digital input ,NOT , OR . NOT , NOR And NAND gate with truth table , how NAND & NOR used as universal gate and numerical on it.
Q.23 Define communication , modulation , demodulation ,transmitter , receiver , amplifier , bandwidth , transducer , repeater , channel , attenuation .
Q.24 Explain LOS communication , derive exp for height of antenna , what is need of modulation and explain point to point and broadcast in communication.
Q.25 Explain block diagram of communication , amplitude modulation & demodulation , explain use of internet , LAN , MAN ,WAN , working of GPS with uses.
Electromagnetism (electrostatic , electricity , magnet & Magnetism , EMI & AC , EM wave 8+7+8+8+3 = 34 marks )
Q.26 Define dielectric constant , dipole , dipole moment , electric flux , equipotential surface and electric field with properties , superposition principle .
Q.27 Derive exp for EF due to dipole at axial , equatorial , Potential Energy due to dipole , Torque due to dipole and condition for equilibrium .
Q.28 State and prove gauss theorem with application , EF due to plane sheet , charged rod , thin spherical shell and its graph and numerical on it.
Q.29 Explain principle , construction and working of PPC with and without dielectric slab , what happen when we insert dielectric when battery connected and when not connected , energy stored in capacitor , energy loss in capacitors , common potential , combination of capacitors and numerical on it.
Q.30 Exp drift velocity and factors on which Vd depend like temp , length , area , its relation with current , exp mobility , resistivity in term of tou and n.
Q.31 Explain wheatstone bridge and derive it with KVL , explain meter bridge , series , parallel and logical questions on it , with numericals on it.
Q.32 Explain color coding , internal resistance with factor , resistivity with temp , how R\ change when we stretch wire , numerical on KCL and KVL .
Q.33 Explain potentiometer over voltmeter , EMF v/s Potential Difference , principle of potentiometer work to find EMF , Compare EMf and find r.
Q.34 Explain Lorentz force and define 1Tesla, how cyclotron work , condition of resonance , derivation of radius , Time , KE and drawback of cyclotron .
Q.35 derive exp for force on conductor in mf . torque on coil carring current and MCG principle construction and working , radial MF & sensitivity.
Q.36 Explain how MCG converted into ammeter and voltmeter and numerical on it , define shunt and its working.
Q.37 Derive expression for force between conductors carrying current in same and different direction & def 1 Ampere with its all graph.
Q.38 State and prove ampere circuital law , derive exp for B due to solenoid and torroid .
Q.39 Explain biotsavart’s law , B due to coil at its centre , axis and B due to infinite straight conductor .
Q.40 Define Intensity of magnetization , magnetizing force , magnetic flux density , magnetic susceptibility , µr=1+χ , curie law and its effect with temp.
Q.41 Difference between dia , para and ferro magnetic material , define earth magnetism , inclination , declination .
Q.42 Explain hysteresis curve (I-H) and why we always use soft iron core , compare hysteresis curve for soft iron and steel.
Q.43 Explain magnetic flux , faradays laws of EMI , Lenz law and prove that it follow law of cons of energy and logical question on it.
Q.44 Explain motional emf of rectangle , rod in uniform MF , Explain eddy current with its applications , damping in galvanometer.
Q.45 Explain self and mutual inductance , Expression for mutual inductance between two long coaxial solenoid .
Q.46 Explain principle , construction and working of AC generator with its diagram and derivation of induced emf for it.
Q.47 Why AC preferred over DC , Derive Expression for Average & RMS value of AC , explain phasor diagram .
Q.48 How I & V vary for resistor , inductor , capacitor and draw graph for them , Explain RLC ckt with phase diagram &exp for impedance , power factor , phase ,resonance frequency and condition of resonance and . why Choke coil block DC.
Q.49 Derive expression for average power of RLC circuit and explain quality factor .
Q.50 Explain principle , construction and working of Transformer , transformation ratio , efficiency with expression and Explain its energy losses in detail .
Q.51 Explain EM wave with its diagram and properties.
Q.52 Explain electromagnetic spectrum with its wavelength and frequency and uses of each wave in our daily life like uv ,infrared , x ray , gamma ,microwave .
Q.53 Explain inconsistency in ampere circuital law given by Maxwell (displacement current equation).
Q.55 Explain Spectrum Produce by Hydrogen like lyman , balmer , paschen , bracket , pfund with numericals on them.
Q.56 Explain ground wave , sky wave , space wave , satellite type of communication with diagram.
Q.57 Explain current carrying loop as a dipole and expression for Magnetic dipole in uniform MF at axial , equatorial , torque due to magnetic dipole , Potential energy of magnetic dipole , bohr magneton.
Q.58 How FAX , MODEM , Mobile telephony ,and mobile calling work.
Mob.: 9039803981
SPECTRUM CLASSES
BEST QUESTIONS FOR CLASS XII BOARD PAPER 2017
Optics (ray and wave optics 7 + 7=14 marks)
Q.1 Derive expression for magnification of compound microscope , Astronomical telescope and solve numerical on them.
Q.2 Explain cassegrain telescope with diagram , difference between reflector and reflecting type telescope
Q.3 Derive expression for lens maker formula , what is effect on F when we dip in water , a high density medium , cut horizontally and vertically.
Q.4 Explain TIR with its conditions , working of optical fiber , porro prism and numerical on it.
Q.5 Derive thin lens formula , mirror formula , and solve numericals of combination of mirror and lens.
Q.6 Explain Huygens principle , prove law of reflection and snell’s law by it , explain wave front and its types.
Q.7 Define coherent sources and condition for sustained interference , explain youngs double slit exp , with derivation of fringe width and logical question on it with numerical.
Q.8 Explain brewester’s law , malus law with numerical , polarized light and prove that light is a transverse wave , how goggle polarized light.
Q.9 Explain diffraction with its condition , difference between interference and diffraction , explain diffraction by single slit and numericals on it .
Q.10 Explain Prism Formula , its graph , condition of minimum deviation , numerical on it , dispersion , why sky blue . how rainbow form .
Modern Physics(dual nature , atom and nuclei, semiconductor , communication 3+7+7+5=22)
Q.11 Explain photoelectric effect , threshold energy , threshold frequency and its all graph given in ncert.
Q.12 Explain Einstein photo electric equation and Emissions of photo Electron s .
Q.13 Derive expression for wavelength of debroglie wave for matter wave and electron and logical question on it and prove it by using davission germer exp.
Q.14 Explain Rutherford model , distance of closest approach with its drawback and bohr’s postulate and derive expression for bohr radius , velocity & energy
Q.15 Explain mass defect , Binding energy , draw BE/Nucleon curve and solve numericals on it.
Q.16 Derive radioactive decay , alpha, beta &gamma decay,half life , average life ,activity &difference b/w nuclear fission & fusion , antineutrino not detected.
Q.17 explain doping with its type , depletion layer , V-I Characterstic for pn junction diode , effect on depletion in reverse and forward bias .
Q.18 Explain valence band theory for conductor , insulator and semiconductor , why Carbon is not semiconductor ,how R change with temp in Semiconductors.
Q.19 Explain working of pn junction diode as a half &full wave rectifier , LED and solar cell with its graph .
Q.20 Explain Transistor in CE mode with its input and output V-I graph and how it is used as an amplifier in CE mode , exp active , saturation and cutoff region.
Q.21 Explain Zener diode , how it work as a stabilizer , explain zener breakdown , avalanche breakdown and why it is heavily doped.
Q.22 Explain analog and digital input ,NOT , OR . NOT , NOR And NAND gate with truth table , how NAND & NOR used as universal gate and numerical on it.
Q.23 Define communication , modulation , demodulation ,transmitter , receiver , amplifier , bandwidth , transducer , repeater , channel , attenuation .
Q.24 Explain LOS communication , derive exp for height of antenna , what is need of modulation and explain point to point and broadcast in communication.
Q.25 Explain block diagram of communication , amplitude modulation & demodulation , explain use of internet , LAN , MAN ,WAN , working of GPS with uses.
Electromagnetism (electrostatic , electricity , magnet & Magnetism , EMI & AC , EM wave 8+7+8+8+3 = 34 marks )
Q.26 Define dielectric constant , dipole , dipole moment , electric flux , equipotential surface and electric field with properties , superposition principle .
Q.27 Derive exp for EF due to dipole at axial , equatorial , Potential Energy due to dipole , Torque due to dipole and condition for equilibrium .
Q.28 State and prove gauss theorem with application , EF due to plane sheet , charged rod , thin spherical shell and its graph and numerical on it.
Q.29 Explain principle , construction and working of PPC with and without dielectric slab , what happen when we insert dielectric when battery connected and when not connected , energy stored in capacitor , energy loss in capacitors , common potential , combination of capacitors and numerical on it.
Q.30 Exp drift velocity and factors on which Vd depend like temp , length , area , its relation with current , exp mobility , resistivity in term of tou and n.
Q.31 Explain wheatstone bridge and derive it with KVL , explain meter bridge , series , parallel and logical questions on it , with numericals on it.
Q.32 Explain color coding , internal resistance with factor , resistivity with temp , how R\ change when we stretch wire , numerical on KCL and KVL .
Q.33 Explain potentiometer over voltmeter , EMF v/s Potential Difference , principle of potentiometer work to find EMF , Compare EMf and find r.
Q.34 Explain Lorentz force and define 1Tesla, how cyclotron work , condition of resonance , derivation of radius , Time , KE and drawback of cyclotron .
Q.35 derive exp for force on conductor in mf . torque on coil carring current and MCG principle construction and working , radial MF & sensitivity.
Q.36 Explain how MCG converted into ammeter and voltmeter and numerical on it , define shunt and its working.
Q.37 Derive expression for force between conductors carrying current in same and different direction & def 1 Ampere with its all graph.
Q.38 State and prove ampere circuital law , derive exp for B due to solenoid and torroid .
Q.39 Explain biotsavart’s law , B due to coil at its centre , axis and B due to infinite straight conductor .
Q.40 Define Intensity of magnetization , magnetizing force , magnetic flux density , magnetic susceptibility , µr=1+χ , curie law and its effect with temp.
Q.41 Difference between dia , para and ferro magnetic material , define earth magnetism , inclination , declination .
Q.42 Explain hysteresis curve (I-H) and why we always use soft iron core , compare hysteresis curve for soft iron and steel.
Q.43 Explain magnetic flux , faradays laws of EMI , Lenz law and prove that it follow law of cons of energy and logical question on it.
Q.44 Explain motional emf of rectangle , rod in uniform MF , Explain eddy current with its applications , damping in galvanometer.
Q.45 Explain self and mutual inductance , Expression for mutual inductance between two long coaxial solenoid .
Q.46 Explain principle , construction and working of AC generator with its diagram and derivation of induced emf for it.
Q.47 Why AC preferred over DC , Derive Expression for Average & RMS value of AC , explain phasor diagram .
Q.48 How I & V vary for resistor , inductor , capacitor and draw graph for them , Explain RLC ckt with phase diagram &exp for impedance , power factor , phase ,resonance frequency and condition of resonance and . why Choke coil block DC.
Q.49 Derive expression for average power of RLC circuit and explain quality factor .
Q.50 Explain principle , construction and working of Transformer , transformation ratio , efficiency with expression and Explain its energy losses in detail .
Q.51 Explain EM wave with its diagram and properties.
Q.52 Explain electromagnetic spectrum with its wavelength and frequency and uses of each wave in our daily life like uv ,infrared , x ray , gamma ,microwave .
Q.53 Explain inconsistency in ampere circuital law given by Maxwell (displacement current equation).
Q.55 Explain Spectrum Produce by Hydrogen like lyman , balmer , paschen , bracket , pfund with numericals on them.
Q.56 Explain ground wave , sky wave , space wave , satellite type of communication with diagram.
Q.57 Explain current carrying loop as a dipole and expression for Magnetic dipole in uniform MF at axial , equatorial , torque due to magnetic dipole , Potential energy of magnetic dipole , bohr magneton.
Q.58 How FAX , MODEM , Mobile telephony ,and mobile calling work.
Er.Shyam Pachori
CL 157 D.D Nagar Mob.: 9039803981
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