TOPPER SAMPLE PAPER 4 Class XII- Physics Solutions. Time: Three hours Max. Marks: 70
|
|
- Joseph Berry
- 5 years ago
- Views:
Transcription
1 TOPPER SAMPLE PAPER 4 Class XII- Physics Solutions Time: Three hours Max. Marks: 70 General Instructions (a) All questions are compulsory. (b) There are 30 questions in total. Questions to 8 carry one mark each, questions 9 to 8 carry two marks each, questions 9 to 7 carry three marks each and questions 8 to 30 carry five marks each. (c) There is no overall choice. However, an internal choice has been provided in one question of two marks, one question of three marks and all three questions of five marks each. You have to attempt only one of the given choices in such questions. (d) Use of calculations is not permitted. (e) You may use the following physical constants wherever necessary. e =.6 0 h = c = 3 0 ms 8 34 µ = 4λ 0 k o B N m A n =.38 0 = / =.6 0 C Js 7 TmA JK kg mole. Suppose one proton A and one electron B are placed between two parallel plates having a potential difference V as shown in the figure.
2 Will A and B experience equal or unequal force?. An electron and a proton moving with the same speed enter the same magnetic field at right angles to the direction of the field. For which of the two particles will the radius of circular path be smaller? 3. For which frequency of light is the human eye most sensitive? 4. The electric current in a wire in the direction from B to A is decreasing. What is the direction of induced current in the metallic loop kept above the wire as shown in the figure? 5. A lens of focal length 30 cm is cut as shown in figure. What will be the new focal length?
3 6. Are matter waves electromagnetic wave? Write de Broglie wave equation. 7. Why a transistor cannot be used as a rectifier? 8. What will happen if energy of the electron orbiting around nucleus becomes positive? 9. Name the dielectric whose molecules have (i) non- zero (ii) zero dipole moment. Define the term dielectric constant for a medium. 0. Two hollow spheres of radius r, and r are given. The space between them is filled with material of resistivity ( ρ ) as shown. Calculate its resistance.. A current carrying solenoid contracts in length. Why?. An A.C. voltage E = Eo sin wt is applied across an inductor L. Obtain an expression for the current I.
4 3. How much work is required to be done to reduce the separation between two like charges of magnitude 00 C µ each from 0 cm to 0 cm? 4. Why is spark produced in the switch, when the light is put off? OR An iron bar falling through a hollow region of a thick cylindrical shell made of copper experiences a retarding force. What can you conclude about the nature of the iron bar? 5. Show that only an accelerated charge can produce an electromagnetic wave. 6. An eye- piece of a telescope consists of two Plano convex lenses L and L each of focal length f separated by a distance of f 3. Where should L be placed relative to the focus of the objective lens of the telescope so that the final image through L is seen at infinity? 7. The half life of 38 U against α - decay is years. What is the activity of g sample of 38 9 U? 8. What is an antenna? What role does it play in communication system? What should be the length of a dipole antenna? 9. A tank is filled with water to a height of.5 cm. The apparent depth of a needle lying at the bottom of the beaker is measured by a microscope to be 9.4 cm. What is the refractive index of water? If water is replaced by a liquid of refractive index.63 up to the same height. By what distance would the microscope have to be moved to focus on the needle again? 0. Calculate capacitance of capacitor as shown below.
5 OR A conducting slab of thickness t is introduced without touching between the plates of a parallel plate capacitor, separated by a distance d (t < d). Derive an expression for the capacitance of the capacitor.. In the following circuit, the transistor used has a β = 00. Find V, V, and V for I = ma. CE BE BC c. Draw a graph to show the variation of the angle of deviation δ with that of angle of incidence i for a monochromatic ray of light passing through a glass prism of refracting angle A. Hence deduce the relation. δm + A sin µ = sin ( A )
6 3. An electron and a photon each have a wavelength of nm. Find i) Their momenta ii) iii) Energy of photon Kinetic energy of electron 4. A potential difference of V volts is applied to a conductor of length L and diameter D. How are the electric field and resistance of the conductor affected when in turn iv) V is halved v) L is doubled vi) D is halved 5. The energy levels of an atom of element are shown in the following diagram. Which one of the level transitions will result in the emission of photons of wavelength 60 nm? 6. Explain the terms (i) pulse amplitude modulation (PAM) and (ii) pulse code modulations (PCM). Which modulation is preferred in transmitting signals and why? 7. Show how the following gates can be obtained by using NAND gates only (i) OR gate (ii) AND gate (iii) Not gate 8. (a) Estimate the average drift speed of conduction electrons in a copper 7 wire of cross sectional area.0 0 m carrying a current of. 5 A. Assume that each copper atom contributes roughly one conduction 3 3 electron. The density of copper is kg m, and its atomic mass is u.
7 (b) Compare drift speed obtained above with vii) viii) Thermal speed of copper atoms at ordinary temperatures. Speed of propagation of electric field along the conductor which causes the drift motion. OR Determine the current in each branch of the network shown in figure. 9. Explain the principle and working of a cyclotron with the help of a labeled diagram. For a cyclotron having oscillator frequency as0mhz, what should be the operating magnetic field for accelerating protons? If the radius of its dees is 60 cm, what is the kinetic energy of the proton beam produced by accelerator? Express your answer in units of ( = p = = ) MeV. e.6 0 C, m.67 0 kg, MeV.60 0 J. OR
8 State Biot Savart law. Using Biot Savart law, derive an expression for the magnetic field at the centre of circular coil of numbers of turns N, radius r and carrying a current i. A semicircular arc of radius 0 cm carries a current of 0A. Calculate the magnitude of the magnetic field at the center of the arc. 30. Explain the phenomenon of total internal reflection. State two conditions that must be satisfied for total internal reflection to take place. Derive the relation between the critical angle and the refractive index of the medium. Draw ray diagram to show how a right angled isosceles prism can be used o to (i) deviate ray through 80 (ii) to invert it. OR µ µ µ µ Prove that + = u v R When refraction occurs from rarer to denser media at a convex refracting spherical surface.
9 TOPPER SAMPLE PAPER 4 Class XII- Physics Solutions. The proton A and the electron B will experience the electrostatics force of equal magnitude but in opposite direction. mv m. As r =, for same V and B, rα. Since m is smaller for an electron, qb q q the radius of the circular path followed by the electron will be smaller Hz. 4. Induced current in the loop will be in the clockwise direction to oppose its origin = f R R 5. Since ( n ) Taking ( n ) R = R, R = R, =. () f R n When lens is cut, then R = R, R =, =..() f ' R Using eq () and eq (), f ' = f = 60cm 6. No, Matter waves are not electromagnetic waves. h The de Broglie equation is λ =. mv 7. A rectifier device conducts only in forward biased and not in reverse biased. But a transistor conducts either way. 8. As negative energy of the electron orbiting around nucleus keeps the electron bounded with the nucleus. If the energy of the electron becomes positive, the electron will no longer be bounded with the nucleus.
10 9. (i) water ( H O ) (ii) oxygen ( O ) The ratio of permittivity of a medium to the permittivity of vacuum is called dielectric constant for the medium. 0. Small resistance = ρdr dr = 4π r ρ l A r ρdr ρ Total resistance = = r 4π r 4π r ρ R = 4π r r r r. When current through a solenoid, it flows in same direction as shown. As current through each turn is in same direction, they attract each other. Hence, the solenoid contracts in length.
11 . Due to the applied emf E, the current I in the inductor will be such that: di E E = L or di = dt dt L E0 sinωt dt E0 di = or I = sin ωt dt L L E I = 0 cos ωt ωl or I = I0 sin ωt π E0 when I0 = ωl 3. Here q = q = 00 µ C, r = 0 cm, r = 0cm Work done q q r r W = 4πε 0 r r ( ) = = 450 J When light is put off, a large emf is produced to oppose the decay of current in the circuit. This large induced emf across the gap causes sparking in the switch. OR Iron bar experiences a retarding force. It means eddy currents are there, which are produced whenever there is a change in magnetic flux. So we conclude that iron bar is a magnet. 5. A stationary charge produces only an electric field around it. When a charge moves with a constant velocity it produces a constant magnetic field in addition to the electric field. As the charge is accelerated, both electric and magnetic fields change with time and space. One becomes the source of the other, thus giving electromagnetic waves.
12 6. Image of the object is formed at focus of objective. This image acts like an object for virtual image of L. Now virtual image produced by L should be located at the focus of L. Since L L = f / 3 Image distance from is / 3 = f v u 3 = f f u u = f / 4 7. Given that T T = years = sec One k mol of an isotope has a mass equal to the atomic weight of that 38 isotope expressed in kg. Hence, g of U contains kg 6 = 4. 0 k mol 38 kg / k mol One k mol of any isotope contains Avogadro s number of atoms. 38 So g of U contains atoms equal to 9 N N = k mol = atoms Activity R = λn = T R =
13 R = s = Bq An antenna is a length of conductor which radiates or picks up electromagnetic waves carrying signals. Basic function of antenna is to convert high frequency signals into electromagnetic waves and vice versa. In most cases, the length of an antenna is λ /, whereλ is the wavelength of radio signal applied. 9. (i) Actual depth t =.5 cm Apparent depth a = 9.4 cm t.5 a µ w = = =.33 a 9.4 (ii) µ =.63 a l a l t.5 = = = 7.7cm µ.63 a l Therefore, the microscope has to be moved by ( ) i.e.,.7cm cm, 0. The capacitor can be considered as split into two capacitors in series as shown below
14 Kε o A kε 0A Here, c = and c = d d The capacitance of capacitor = + c c c cc c = c + c c ε o A k k = d k + k OR Let σ be the surface charge density of capacitor plates of area A. Electric field between the plates in the air space is σ Eo = ε o
15 As in case of conducting slab E = E. Net electric field inside the p conducting slab is zero. Now potential difference between the plates of capacitor is σ V = Eo ( d t) = ( d t) ε o Q = σ A Q ε o A Co C = = = V d t t / d Eo A where Co = d. Since β = 00 I V V V c CE BE = 0 BC =? =? =? 3 A o
16 V = V ' I 4 0 CE BE C = = VCE = volt Ic β = I I b b Ic = = 0 β 5 A V = V I 0 V BE EE b BE = 0 4 = 6valt 5 and V = V V V BC BE CE BC = 6 = 4volt.
17 At minimum deviation position, there is only one angle of incidence. In the minimum deviation position ( i) i = e ( ii) r = r = r (iii) Refracted ray LM on is parallel to the base We know that r + r = A and δ m = ( i + e) A
18 At minimum deviation position, we have r = A r = A δ m + A and i = It µ is the refractive index of the material of the prism, then according to Snell s law sin i µ = sin r A + δm sin Thus, µ = sin A 3. Since λ = h p ( i) Momentum, 34 h p = = 9 λ 0 5 p = kg m / s hc ( ii) Energy of photon E = hv = λ E = =.4 kev (iii) Kinetic energy of election 4. Effect on electric field V ( i) E = L h = λ me 34 ( ) ( ) = =.5eV 9 3 9
19 When V is halved E V E = = L Electric field gets halved. (ii) When L is doubled V E E ' = = L Electric field gets halved. (iii) When D is halved. No effect on electric field. Effect on resistance - (i) When potential is halved, current also gets reduced in the same proportion. Thus, resistance does not change. V i. e., R constant I = = ρl (ii) R = A As length is doubled, resistance also gets doubled.
20 (iii) When D is halved, area reduces to one fourth. Thus, resistance becomes four times. hc 5. The energy of a photon of wavelength λ is E = λ For λ = 60nm E = =.0eV Thus transition D for which E is.0 ev will take place. 6. Pulse amplitude modulation (PAM) Here carrier wave is in the form of pulses And information signal is continuous wave. (i) Amplitude of the pulse varies in accordance with the modulating signal. It could be single polarity or double polarity PAM.
21 (ii) Pulse code modulation (PCM) It is modulation technique employed in digital communication. In PCM carrier wave is a continuous wave and information signal is in the form of coded pulse. Common modulating techniques are i) Amplitude shift keying (ASK) ii) Frequency shift keying (FSK) iii) Phase shift keying (PSK) Since is more error and noise free communication so it is preferred.
22 7. (i) Realization of OR gate using NAND gate (ii) Realization of AND gate using NAND gate (iii) Realization of NOT gate using NAND gate 8. (a) We know that I = Vd ne A V d I = () ena Given that I =.5A A =.0 0 e =.6 0 m 7 9 Density of copper = kg / m Atomic mass of copper = 63.59u C 3 3 Therefore, the number of atoms or number of free electrons per unit volume of copper ( n) = n = m
23 Thus, from equation (), we get drift velocity Vd = V =. 0 m / s =.m s d 3 (b) (i) Thermal speed of copper atoms at temperature T is obtained from 3 3KBT formula MV = KBT V = M at T = 300 k, V = 0 m s 5 Thus, drift speed of electrons is much smaller about 0 times the typical thermal speed at ordinary temperatures. (ii) Electric field travels along a conductor with a speed of electro magnetic m s. Drift speed in comparison is 0 times the wave ( ) speed of electric field. OR We take closed loop ADCA and apply Kirchhoff s second rule ( ) ( ) 4 I, I + I + I I I + 0 = 0 3 7I 6I I = 0 () 3 For closed loop ABCA, we get 4I I + I I + 0 = 0 ( ) 3 I 6I I = 0 () 3 For closed loop BCDEB, we get
24 ( I I ) ( I I I ), = I 4I 4I = 5 3 (3) On solving equation (), () and (3) we get I =.5A I = 0.63A I3 =.88A Thus, the currents in various branches of the network are AB = I = 0.63A AD = I I =.87A CA = I =.5A CD = I + I3 I = 0.0A DEB = I3 =.88A BC = I + I3 =.5A 9. Principle of Cyclotron A positive ion can be accelerated to a very high energy by making it to pass through a moderate electric field again and again by making use of magnetic field. Working High frequency oscillator maintains a modest alternating potential difference between the dees. Suppose positive ion produced at any instant finds D at negative potential. It gets accelerated towards it.
25 Perpendicular magnetic field makes it to move in a circular path. Particle traces a semicircular path of radius r such that mv Bqv = r mv r = Bq The time taken t is equal to the half time period of electric oscillator. Hence, as soon as the ion arrives in the gap between the dees, the polarity of the dees is reverse and positive ion gets accelerated towards D. This way ion keeps on accelerating until it is removed out of the dees by applying deflecting electric across a window. 6 Given that v = 0 0 Hz R = 0.6m Kinetic energy =? At resonance
26 Bq v = π m π mv B = q = e e B = B = 0.66T Kinetic energy = B e R = m ( 0.66) (.6 0 ) ( 0.6) = 7.5 MeV ( ) Bio- Savart s Law -The magnetic field induction at a point P due to a current element is given as. µ Idl o sinθ db = 4π r Magnetic field at the center of a circular coil carrying current. According to Biot Savart s law magnetic field at the centre of the coil carrying I due to current element Idl is OR µ o db = Idl = 90 4π r o ( θ ) Magnetic field due to whole loop is µ o I B = db = dl 4π r µ o I B = 4π r π r
27 µ B = r o I When there are N number of turns µ NI o B = r Numerical:- Magnetic field at the center of semicircular are of radius r carrying current I is µ I o B = 4r Given r = 0cm = 0.m I = 0A µ = 4π 0 o Tm A 7 7 4π 0 0 B = B =.57 0 tesla. It is perpendicular to the plane of the paper directed in words. 30.Total Internal Reflection:- Total Internal reflection is the phenomenon of reflection of light rays back to the denser medium when they are incident on the interference of a denser and a rarer medium at an angle of incidence greater than the critical angle.
28 Conditions for total internal reflection:- (a) Light rays should go from denser medium to rarer medium. (b) The angle of incidence should be greater than the critical angle i c where Sin i c = µ Then the rays are totally internally reflected. (i) for angle i = i r = 90 0 sin i sin i µ = = sin r sin 90 c 0 µ = sin i To deviate ray through c c o 80. fig ( a ) (ii) To invert object. fig (b)
29 OR Let the µ be refracting index of rarer medium and µ be the refracting index of spherical convex refracting surface XY of small aperture. From A draw AM such that AM OI In IAC ( ) r + B = γ Ext. angle property r = γ β Similarly in OAC i = α + γ
30 According to snell s law µ sin i i µ r µ i µ = sin r r = So, µ ( α γ ) µ ( β ) + = (i) γ AM Letα tan α = = OM AM PO AM β = tan β = = MI AM PC As spherical surface has small aperture. AM AM y = tan β = = MC PC Substituting the value in eq. (I), We have µ µ µ + = µ PO PI PC by sign convention put PO = u, PI =+ v, PC = + R
31 We get µ µ µ + = µ u v R Which is the required relation.
XXXXXXXXXXXXXXX. First Pre-Board Examination, Physics
Series SSO Code No. 55/1/B Roll No. Candidates must write the code on the title page of the answer book General Instructions: Please check that this question paper contains 6 printed pages. Code number
More informationSample Question Paper. Class XII -Physics. (Applicable for March 2016 Examination) Time Allowed: 3 Hours Maximum Marks: 70
Sample Question Paper Class XII -Physics (Applicable for March 2016 Examination) Time Allowed: 3 Hours Maximum Marks: 70 General Instructions 1. All questions are compulsory. There are 26 questions in
More informationKENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION
KENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION SAMPLE PAPER 1 (217-18) SUBJECT: PHYSICS (43) BLUE PRINT : CLASS XII UNIT VSA (1 mark) SA - I (2 marks) SA II (3 marks) VBQ (4 marks) LA (5 marks) Total I
More informationAISSCE 2016 EXPECTED (SURE SHORT) QUESTIONS WEIGHTAGE-WISE 2016
CLASS: XII AISSCE 2016 Subject: Physics EXPECTED (SURE SHORT) QUESTIONS WEIGHTAGE-WISE 2016 Q3 Section A ( 1 Mark ) A force F is acting between two charges placed some distances apart in vacuum. If a brass
More informationKENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION
KENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION SAMPLE PAPER 5 (217-18) SUBJECT: PHYSICS (43) BLUE PRINT : CLASS XII UNIT VSA (1 mark) SA - I (2 marks) SA II (3 marks) VBQ (4 marks) LA (5 marks) Total I
More informationSample Question Paper 3 Class XII Physics
Sample Question Paper 3 Class XII Physics Time allowed: 3hrs Maximum Marks: 70 General Instructions: 1. All questions are compulsory. There are 26 questions in all. 2. This question paper has five sections:
More informationPHYSICS (042) CLASS-XII ( )
PHYSICS (042) CLASS-XII (2012-13) 0 CLASS XII PHYSICS (Theory) Time allowed: 3 hours Maximum Marks: 70 General Instructions: (i) All questions are compulsory. (ii) There is no overall choice. However an
More informationPHYSICS. Paper 1 (THEORY) Three hours and a quarter
PHYSICS Paper 1 (THEORY) Three hours and a quarter (The first 15 minutes of the examination are for reading the paper only. Candidates must NOT start writing during this time). -------------------------------------------------------------------
More informationCBSE QUESTION PAPER. PHYSICS (Theory)
CBSE QUESTION PAPER PHYSICS (Theory) Time allowed : 3 hours Maximum Marks : 70 General Instructions: (i) (ii) (iii) All questions are compulsory. There are 30 questions in total. Questions 1 to 8 carry
More informationClass XII Physics (Theory)
DATE : 0/03/209 SET-3 Code No. //3 Regd. Office : Aakash Tower, 8, Pusa Road, New Delhi-000. Ph.: 0-4762346 Class XII Physics (Theory) Time : 3 Hrs. Max. Marks : 70 (CBSE 209) GENERAL INSTRUCTIONS :. All
More informationKENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION
KENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION SAMPLE PAPER 04 (2017-18) SUBJECT: PHYSICS (043) BLUE PRINT : CLASS XII UNIT VSA (1 mark) SA - I (2 marks) SA II (3 marks) VBQ (4 marks) LA (5 marks) Total
More informationPHYSICS (Theory) Time Allowed: 3 hours Maximum Marks: 70
Sample Paper (CBSE) Series PHY/SP/1B Code No. SP/1-B PHYSICS (Theory) Time Allowed: hours Maximum Marks: 70 General Instructions: (i) (ii) (iii) (iv) (v) All questions are compulsory. This question paper
More informationDELHI PUBLIC SCHOOL, BAHADURGARH Sample Paper 1 PHYSICS CLASS-XII Date- Duration:3hr
SET: 1 General Instructions:- DELHI PUBLIC SCHOOL, BAHADURGARH Sample Paper 1 PHYSICS CLASS-XII Date- Duration:3hr All questions are compulsory. There are 30 questions in total. Questions 1 to 8 carry
More informationPHYSICS : CLASS XII ALL SUBJECTIVE ASSESSMENT TEST ASAT
PHYSICS 202 203: CLASS XII ALL SUBJECTIVE ASSESSMENT TEST ASAT MM MARKS: 70] [TIME: 3 HOUR General Instructions: All the questions are compulsory Question no. to 8 consist of one marks questions, which
More informationSAMPLE PAPER III. Time : 3 hours Max. Marks : 70
SAMPLE PAPER III Time : 3 hours Max. Marks : 70 General Instructions All questions are compulsory. 1. Draw the equipotential surfaces for two point charges each of magnitude q > 0 placed at some finite
More informationSample Question Paper (PHYSICS) CLASS-XII ( ) Time Allowed: 3Hours Maximum Marks: 70
Sample Question Paper (PHYSICS) CLASS-XII (2017-18) Time Allowed: 3Hours Maximum Marks: 70 General Instructions 1. All questions are compulsory. There are 26 questions in all. 2. This question paper has
More information5. You may use the following values of physical constants wherever necessary. Class XII Physics (042) Sample Question Paper
Class XII Physics (04) Sample Question Paper 018-19 Time allowed: hours. Max. Marks: 70 General Instructions: 1. All questions are compulsory. There are 7 questions in all.. This question paper has four
More informationCBSE XII Physics 2016
Time: 3 hours; Maximum Marks: 70 General Instructions: 1. All questions are compulsory. There are 26 questions in all. 2. This question paper has five sections: Section A, Section B, Section, Section D
More informationSAMPLE PAPER-05 (solved) PHYSICS (Theory) Class XII. Time allowed: 3 hours Marks: 70
SAMPLE PAPER-05 (solved) PHYSICS (Theory) Class XII Time allowed: 3 hours Marks: 70 Maximum General Instructions: a) All the questions are compulsory. b) There are 26 questions in total. c) Questions 1
More informationBLUE-PRINT II XII Physics
BLUE-PRINT II XII Physics S.No. UNIT VSA SA I SA II LA Total (1 Mark) (2 Marks) (3Marks) (5 Marks) 1. Electrostatics 1(1) 4(2) 3(1) - 8(4) 2. Current Electricity - 2(1) - 5(1) 7(2) 3. Magnetic Effect of
More informationCBSE Sample Paper 7. Question 1 What is the ratio of radii of the orbits corresponding to first excited state and ground state in a hydrogen atom?
1 CBSE Sample Paper 7 General Instruction: 1. Answer all questions 2. Internal choices are provided for some questions 3. Question numbers 1 to 8 are very short answer questions and carry 1 mark each.
More informationPlease write down the Serial Number of the question before attempting it. PHYSICS (Theory) Time allowed : 3 hours Maximum Marks : 70
Series ONS SET-1 Roll No. Candiates must write code on the title page of the answer book Please check that this question paper contains 16 printed pages. Code number given on the right hand side of the
More informationPHYSICS 2005 (Delhi) Q3. The power factor of an A.C. circuit is 0.5. What will be the phase difference between voltage and current in this circuit?
General Instructions: 1. All questions are compulsory. 2. There is no overall choice. However, an internal choke has been pro vided in one question of two marks, one question of three marks and all three
More informationCBSE XII Physics 2015
Time: 3 hours; Maximum Marks: 70 General Instructions: 1. All questions are compulsory. There are 26 questions in all. 2. This question paper has five sections: Section A, Section B, Section, Section D
More informationCBSE PHYSICS QUESTION PAPER (2005)
CBSE PHYSICS QUESTION PAPER (2005) (i) (ii) All questions are compulsory. There are 30 questions in total. Questions 1 to 8 carry one mark each, Questions 9 to 18 carry two marks each, Question 19 to 27
More informationc = m/s h = Js e = C µ 0 = 4 π 10 7 T ma l ε 0 = C 2 N 1 1 = N m 2 C 2 me = 9.
CLASS: XII SUBJECT: PHYSICS MAX. MARKS: 70 TIME: 3 Hours General Instructions: (i) All questions are compulsory. There are 2 questions in all. (ii) This question paper has five sections: Section A, Section
More informationGeneral Instructions :
Class XII Subject - Physics General Instructions : 1. All questions are compulsory. 2. Q. 1 to 5 are Very short Answer type questions (1 Mark each. ) 3. Q. 6 to 12 are short Answer type questions. (2 Marks
More informationCBSE Annual Examination Question Paper 2013
CBSE Annual Examination Question Paper 2013 PHYSICS (THEY) Time allowed: 3 hours] [Maximum marks: 70 General Instructions: (i) All questions are compulsory. (ii) There are 29 questions in total. Question
More informationMaharaja Agrasen Model School, PitamPura. SAMPLE QUESTION PAPER, Physics
Maharaja Agrasen Model School, PitamPura SAMPLE QUESTION PAPER, Physics MAX.MARKS- 70 TIME- 3 HOURS General Instructions: (i) All questions are compulsory. (ii) Question numbers 1 to 5 are very short answer
More informationFinal on December Physics 106 R. Schad. 3e 4e 5c 6d 7c 8d 9b 10e 11d 12e 13d 14d 15b 16d 17b 18b 19c 20a
Final on December11. 2007 - Physics 106 R. Schad YOUR NAME STUDENT NUMBER 3e 4e 5c 6d 7c 8d 9b 10e 11d 12e 13d 14d 15b 16d 17b 18b 19c 20a 1. 2. 3. 4. This is to identify the exam version you have IMPORTANT
More informationSTD : 12 TH GSEB PART A. 1. An electric dipole is placed in a uniform field. The resultant force acting on it...
STD : 1 TH PHYSICS RJ VISION PVT. LTD. (MOST STABLE & INNOVATIVE INSTITUTE) GSEB COURSE NAME: 1 TH Total Marks : 100 Time : 3 hrs PART A Multiple Choice uestions : 1. An electric dipole is placed in a
More informationPHYSICS PAPER 1 (THEORY)
PHYSICS PAPER 1 (THEORY) (Three hours) (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time.) ---------------------------------------------------------------------------------------------------------------------
More informationWhere k = 1. The electric field produced by a point charge is given by
Ch 21 review: 1. Electric charge: Electric charge is a property of a matter. There are two kinds of charges, positive and negative. Charges of the same sign repel each other. Charges of opposite sign attract.
More informationPHYSICS (Theory) Time Allowed: 3 hours Maximum Marks: 70
Sample Paper (CBSE) Series PHY/SP/1D Code No. SP/1-D PHYSICS (Theory) Time Allowed: hours Maximum Marks: 70 General Instructions: (i) (ii) (iii) (iv) (v) All questions are compulsory. This question paper
More informationwe can said that matter can be regarded as composed of three kinds of elementary particles; proton, neutron (no charge), and electron.
Physics II we can said that matter can be regarded as composed of three kinds of elementary particles; proton, neutron (no charge), and electron. Particle Symbol Charge (e) Mass (kg) Proton P +1 1.67
More informationPhysics (Theory) There are 30 questions in total. Question Nos. 1 to 8 are very short answer type questions and carry one mark each.
Physics (Theory) Time allowed: 3 hours] [Maximum marks:70 General Instructions: (i) All questions are compulsory. (ii) (iii) (iii) (iv) (v) There are 30 questions in total. Question Nos. to 8 are very
More informationFor more sample papers visit :
For more sample papers visit : www.4ono.com PHYSCS Paper 1 (THEORY) (Three hours) (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time)
More informationCBSE Examination Paper
CBSE Examination Paper Time allowed : 3 hours Maximum marks: 70 General Instructions: Same as CBSE Examination Paper SET I 1. Using the concept of force between two infinitely long parallel current carrying
More informationPhysics (Theory) There are 30 questions in total. Question Nos. 1 to 8 are very short answer type questions and carry one mark each.
Physics (Theory) Time allowed: 3 hours] [Maximum marks:70 General Instructions: (i) All questions are compulsory. (ii) (iii) (iii) (iv) (v) There are 30 questions in total. Question Nos. 1 to 8 are very
More informationCBSE Sample Paper 1. Question 4 What are the maximum and minimum values of power factor in a LCR circuit and under what conditions?
CBSE Sample Paper General Instruction:. Answer all questions. Internal choices are provided for some questions 3. Question numbers to 8 are very short answer questions and carry mark each. 4. Question
More informationChapter wise Theoretical Important Questions in Physics for Class-XII
Electrostatics- 1. Derive an expression for the electric field at a point on the axial position of an electric dipole. 2. Derive an expression for the electric field at a point on the equatorial position
More information3. How long will a radioactive isotope, whose half-life is T years, take for its activity to reduce to 1/8 th of its initial value?
No. of printed pages:5 INDIAN SCHOOL SOHAR SECOND TERM EXAM- 2014 PHYSICS THEY CLASS: XII MARKS:70 DATE: 1 /12/2014 TIME:3hrs General Instructions: 1. All questions are compulsory. 2. There are 26 questions
More informationMARKING SCHEME SET 55/1/G Q. No. Expected Answer / Value Points Marks Total Marks
MARKING SCHEME SET 55//G Q. No. Expected Answer / Value Points Marks Total Marks Set,Q Set2,Q5 Set,Q2 Set,Q2 Set2,Q4 Set,Q5 Set,Q Set2,Q2 Set,Q4 Set,Q4 Set2,Q Set,Q Set,Q5 Set2,Q Set,Q Set,Q6 Set2,Q7 Set,Q0
More informationCBSE Sample Paper 8. c = ms -1 h = Js e = C
1 CBSE Sample Paper 8 General Instruction: 1. Answer all questions 2. Internal choices are provided for some questions 3. Question numbers 1 to 8 are very short answer questions and carry 1 mark each.
More informationPHYSICSCATALYST.COM. CBSE Sample Paper 9
CBSE Sample Paper 9 General Instruction: 1. Answer all questions 2. Internal choices are provided for some questions 3. Question numbers 1 to 8 are very short answer questions and carry 1 mark each. 4.
More informationChapter wise Theoretical Important Questions in Physics for. Class-XII. Electrostatics
Chapter wise Theoretical Important Questions in Physics for Class-XII Electrostatics 1. Derive an expression for the electric field at a point on the axial position of an electric dipole. 2. Derive an
More informationCLASS XII SAMPLE PAPER-I PHYSICS
CLASS XII SAMPLE PAPER-I PHYSICS Time: Three Hours Full Marks: 70 General Instructions: All questions are compulsory. There is no overall choice. However, an internal choice has been provided in one question
More informationPHYSICS QUESTION PAPER CLASS-XII
PHYSICS QUESTION PAPER CLASS-XII Time : 3.00 Hours] [Maximum Marks : 100 Instructions : There are four sections and total 60 questions in this question paper. ( 1) (2) All symbols used in this question
More informationPRE-BOARD EXAMINATION STD : XII MARKS : 150
PRE-BOARD EXAMINATION STD : XII MARKS : 150 SUB : PHYSICS TIME : 3.00 Hrs I.Choose the correct answer: 30x1=30 1.Which of the following quantities not a scalar? a)electric flux b) electric potential c)
More information2. Q. 1 to 5 are Very short Answer type questions (1 Mark each. ) 3. Q. 6 to 12 are short Answer type questions. (2 Marks each. )
1. All questions are compulsory. 2. Q. 1 to 5 are Very short Answer type questions (1 Mark each. ) 3. Q. 6 to 12 are short Answer type questions. (2 Marks each. ) 4. Q. 13 to 24 are short answer questions
More informationGOVIND VIDYALAYA TAMULIA XII PHYSICS
GOVIND VIDYALAYA TAMULIA XII PHYSICS Time : 3 Hours Max. Marks : 70 General Instructions (a) All questions are compulsory. (b) There are 30 questions in total. Questions 1 to 8 carry one mark each, questions
More informationFor more sample papers visit :
PHYSICS (THEORY) (Three hours) For more sample papers visit : www.4ono.com Answer all questions in Part I and six questions from Part II, choosing two questions from each of the Sections A, B and C. All
More informationTHE INDIAN COMMUNITY SCHOOL, KUWAIT
THE INDIAN COMMUNITY SCHOOL, KUWAIT SERIES : I SE / 2016-2017 CODE : N 042 MAX. MARKS : 70 TIME ALLOWED : 3 HOURS NO. OF PAGES : 6 PHYSICS ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
More informationSESSION IMPORTANT QUESTIONS FOR CBSE EXAMINATION
SESSION 2012-2013 IMPORTANT QUESTIONS FOR CBSE EXAMINATION CLASS XII PHYSICS Very Important questions are marked in bold letters. Some NCERT questions are also mentioned. 1. A small test is released from
More informationKENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION
KENDRIYA VIDYALAYA SANGATHAN, HYDERABAD REGION SAMPLE PAPER 03 (2017-18) SUBJECT: PHYSICS (043) BLUE PRINT : CLASS XII UNIT VSA (1 mark) SA - I (2 marks) SA II (3 marks) VBQ (4 marks) LA (5 marks) Total
More information3. Anaemia can be diagnosed by (a) 15 P 31 (b) 15 P 32 (c) 26 Fe 59 (d) 11 Na 24. (b) α particle (Alpha particle)
MARCH 2010 PHYSICS Time Allowed: 3 Hours Maximum Marks: 150 PART - I 30 x 1 = 30 Note: i) Answer all the questions. ii) Choose and write the correct answer. 1. Electron microscope works on the principle
More informationPractice Paper-3. Q. 2. An electron beam projected along + X-axis, in a magnetic field along the + Z-axis. What is
Practice Paper-3 Q. 1. An electric dipole of dipole moment 20 10 6 cm is enclosed by a closed surface. What is the net flux coming out of the surface? Q. 2. An electron beam projected along + X-axis, in
More informationCBSE 12th Physics 2016 Unsolved Paper Delhi Board ARYAN INSTITUTE
CBSE 12th Physics 2016 Unsolved Paper Delhi Board CBSE 12th Physics 2016 Unsolved Paper Delhi Board TIME - 3HR. QUESTIONS - 26 THE MARKS ARE MENTIONED ON EACH QUESTION SECTION-A Q.1. A point charge +Q
More informationSure-shot questions for SA-2 (Class XII) Physics
Sure-shot questions for SA-2 (Class XII) Physics 1. Two point charges q and -2q are kept d distance apart. Find the location of the point relative to charge q at which potential due to this system of charges
More informationSECTION-A. 2. How does the angle of minimum deviation of a glass prism vary, if the incident violet light is replaced with red light?
No. of printed pages:4 INDIAN SCHOOL SOHAR SECOND TERM EXAM- 2015 PHYSICS THEY CLASS: XII MARKS:70 DATE: 29 /11/2015 TIME:3hrs General Instructions: 1. All questions are compulsory. 2. There are 26 questions
More informationCBSE_2014_SET_3 Physics
CBSE_2014_SET_3 Physics 1. A conducting loop is held below a current carrying wire PQ as shown. Predict the direction of the induced current in the loop when the current in the wire is constantly increasing.
More informationPHYSICS PAPER 1 (THEORY)
PHYSICS PAPER 1 (THEORY) (Three hours) (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time.) ---------------------------------------------------------------------------------------------------------------------
More informationKENDRIYA VIDYALAYA SANGATHAN AHMEDABAD REGION 50 SURE SHOT QUESTIONS (LONG ANSWER TYPE)
KENDRIYA VIDYALAYA SANGATHAN AHMEDABAD REGION 50 SURE SHOT QUESTIONS (LONG ANSWER TYPE) 1. Define electric field intensity and electric dipole moment. Derive expression for electric field intensity at
More informationXII PHYSICS (FOREIGN 2015) SET-2
XII PHYSICS (FOREIGN 2015) SET-2 Time allowed : 3 hours Maximum Marks : 70 General Instructions : (i) There are 26 questions in all. All questions are compulsory. (ii) This question paper has five sections
More informationPHYSICS. SGC Education center Pushpak Tutorial Super25 Concept. Roll No.
Roll No. Please check that this question paper contains 7 printed pages Please check that this question paper contains 26 questions. Please write down the Serial Number of the question before attempting
More informationDownloaded from
CBSE EXAMINATION PAPERS ALL INDIA 2011 Time allowed: 3 hours Maximum marks: 70 General Instructions: (a) All questions are compulsory. (b) There are 30 questions in total. Questions 1 to 8 carry one mark
More informationCBSE Board Class XII Physics Set 1 Board Paper Time: 3 hours [Total Marks: 70]
CBSE Board Class XII Physics Set 1 Board Paper - 2009 Time: 3 hours [Total Marks: 70] General instructions: 1. All questions are compulsory. 2. There are 30 questions in total. Questions 1 to 8 are very
More informationPHYSICS QUESTION PAPER CLASS-XII
PHYSICS QUESTION PAPER CLASS-XII Time : 3.00 Hours] [Maximum Marks : 100 Instructions : 1. There are A, B, C and D sections, containing 60 questions in this question paper. 2. Symbols used in this question
More informationSample Question Paper. Class XII. Physics. Time Allowed: 3 Hours Maximum Marks: 70
Sample Question Paper Class XII Physics Time Allowed: 3 Hours Maximum Marks: 70 General Instructions 1. All questions are compulsory. There are 26 questions in all. 2. This question paper has five sections:
More informationImpedance/Reactance Problems
Impedance/Reactance Problems. Consider the circuit below. An AC sinusoidal voltage of amplitude V and frequency ω is applied to the three capacitors, each of the same capacitance C. What is the total reactance
More informationfilled with water of refractive index 4/3. The water between them forms a thin equi-concave lens. Find the focal length of the combination of glass an
LIKELY PROBLEMS IN PHYSICS FOR II PUC 1. A ray of light is incident at an angle of 30 0 on one side of a glass slab of thickness 0.05 m. The lateral shift of the ray on passing through the slab is 0.01
More information1. Write the relation for the force acting on a charge carrier q moving with velocity through a magnetic field in vector notation. Using this relation, deduce the conditions under which this force will
More informationPHYSICS. Downloaded From: Time Allowed : 3 Hrs. Max. Marks 60
PHYSICS Time Allowed : Hrs. Max. Marks 60 * Candidates are required to give their answers in their own words as far as practicable. * Marks allotted to each question are indicated against it. Special Instructions
More informationPHYSICS Course Structure Units Topics Marks Electrostatics Current Electricity III Magnetic Effect of Current & Magnetism
PHYSICS Course Structure Units Topics Marks I Chapter 1 Chapter 2 II Chapter 3 III Chapter 4 Chapter 5 IV Chapter 6 Chapter 7 V Chapter 8 VI Chapter 9 Electrostatics Electric Charges and Fields Electrostatic
More informationPhysics 208, Spring 2016 Exam #3
Physics 208, Spring 206 Exam #3 A Name (Last, First): ID #: Section #: You have 75 minutes to complete the exam. Formulae are provided on an attached sheet. You may NOT use any other formula sheet. You
More informationPhysics 227 Final Exam December 18, 2007 Prof. Coleman and Prof. Rabe. Useful Information. Your name sticker. with exam code
Your name sticker with exam code Physics 227 Final Exam December 18, 2007 Prof. Coleman and Prof. Rabe SIGNATURE: 1. The exam will last from 4:00 p.m. to 7:00 p.m. Use a #2 pencil to make entries on the
More informationPhysics Assessment Unit A2 2
Centre Number 71 Candidate Number ADVANCED General Certificate of Education 2014 Physics Assessment Unit A2 2 assessing Fields and their Applications AY221 [AY221] MONDAY 9 JUNE, MORNING TIME 1 hour 30
More informationMARKING SCHEME SET 55/1/MT Q. No. Expected Answer / Value Points Marks Total Marks. Section A
MARKING SCHEME SET 55//MT Q. No. Expected Answer / Value Points Marks Total Marks Set,Q Set2,Q5 Set,Q4 Section A Set,Q2 Set2,Q4 Set,Q5 Set,Q Set2,Q2 Set,Q Set,Q4 Set2,Q Set,Q2 Set,Q5 Set2,Q Set,Q Set,Q6
More informationMass of neutron=1.675 X kg. SECTION-A
No. of printed pages:5 INDIAN SCHOOL SOHAR FIRST TERM EXAM- 2015 PHYSICS THEY CLASS: XII MARKS:70 DATE: 15 /9/2015 TIME:3hrs General Instructions: 1. All questions are compulsory. 2. There are 26 questions
More informationMOCK CET PHYSICS PAPER 1
MOCK CET PHYSICS PAPER 1 1. Rotational kinetic energy of a body is given by the equation 2 2 where I is moment of inertia and ω angular velocity of the body. The dimensional formula of I using the above
More informationCambridge International Examinations Cambridge International Advanced Level *6106210292* PHYSICS 9702/42 Paper 4 A2 Structured Questions May/June 2014 2 hours Candidates answer on the Question Paper. No
More informationNEW HORIZON PRE UNIVERSITY COLLEGE LESSON PLAN FOR THE ACADEMIC YEAR Department of PHYSICS (II PUC)
NEW HORIZON PRE UNIVERSITY COLLEGE LESSON PLAN FOR THE ACADEMIC YEAR 2017 2018 Department of PHYSICS (II PUC) Week Month: June 4 Electric charges and properties Coulomb s law superposition principle Electric
More informationBLUE PRINT FOR MODEL QUESTION PAPER 4
Unit Chapter Teaching Hours Marks allotted (VSA) mark (SA) 3 mark (SA) 5 mark (LA) 5 mark (NP) BLUE PRINT FOR MODEL QUESTION PAPER 4 SUBJECT : PHYSICS (33) CLASS : II PUC Topic Electric Charges and Fields
More informationClass XII_Delhi_Physics_Set-1
17. Write three important factors which justify the need of modulating a message signal. Show diagrammatically how an amplitude modulated wave is obtained when a modulating signal is superimposed on a
More informationFig. 2.1 I =... A [2] Suggest why it would be impossible for overhead cables carrying an alternating current to float in the Earth s magnetic field.
1 (a) Fig. 2.1 shows a horizontal current-carrying wire placed in a uniform magnetic field. I region of uniform magnetic field wire Fig. 2.1 The magnetic field of flux density 0.070 T is at right angles
More informationLouisiana State University Physics 2102, Exam 3 April 2nd, 2009.
PRINT Your Name: Instructor: Louisiana State University Physics 2102, Exam 3 April 2nd, 2009. Please be sure to PRINT your name and class instructor above. The test consists of 4 questions (multiple choice),
More informationYOUR NAME Sample Final Physics 1404 (Dr. Huang)), Correct answers are underlined.
YOUR NAME Sample Final Physics 1404 (Dr. Huang)), Correct answers are underlined. Useful constants: e=1.6 10-19 C, m e =9.1 10-31 kg, m p =1.67 10-27 kg, ε 0 =8.85 10-12 C 2 /N m 2, c=3 10 8 m/s k e =8.99
More informationSelect the response that best answers the given statement. Be sure to write all final multiple choice answers on your Scantron answer sheet.
Chapters 15-30 PHYS 1402 - Brooks This practice test is similar to the actual final. The final exam will focus on questions involving solving problems, and not so much on conceptual questions. The final
More informationGURU GOBIND SINGH PUBLIC SCHOOL
GURU GOBIND SINGH PUBLIC SCHOOL SECTOR V/B, BOKARO STEEL CITY Class XII Sub : Physics Assignment Chapter 01 ( Electrostatics) 1. What is a dielectric? Why does the capacitance of a parallel plate capacitor
More informationMAGNETIC PROBLEMS. (d) Sketch B as a function of d clearly showing the value for maximum value of B.
PHYS2012/2912 MAGNETC PROBLEMS M014 You can investigate the behaviour of a toroidal (dough nut shape) electromagnet by changing the core material (magnetic susceptibility m ) and the length d of the air
More informationSENIOR_ 2017_CLASS_12_PHYSICS_ RAPID REVISION_1_ DERIVATIONS IN FIRST FIVE LESSONS Page 1
INDIAN SCHOOL MUSCAT Department of Physics Class XII Rapid Revision -1 DERIVATIONS IN FIRST FIVE LESSONS 1) Field due to an infinite long straight charged wire Consider an uniformly charged wire of infinite
More informationSAMPLE QUESTION PAPERS CLASS 12 MARCH 2017 EXAMINATION PHYSICS. *SolutionsforSQP6-10canbedownloaded fromwww.oswaalbooks.com.
OSWAAL CBSE Strictly Based on Latest Syllabus Issued by CBSE for 2017 Examination SAMPLE QUESTION PAPERS CLASS 12 MARCH 2017 EXAMINATION PHYSICS *SolutionsforSQP6-10canbedownloaded fromwww.oswaalbooks.com
More information1. In Young s double slit experiment, when the illumination is white light, the higherorder fringes are in color.
TRUE-FALSE STATEMENTS: ELECTRICITY: 1. Electric field lines originate on negative charges. 2. The flux of the electric field over a closed surface is proportional to the net charge enclosed by the surface.
More informationCBSE-XII-2015 EXAMINATION. Section A 1. What is the function of a band pass filter used in a modulator for obtaining AM signal? 1
CBSE-XII-5 EXAMINATION PHYSICS Paper & Solution Time : 3 Hrs. Max. Marks : 7 General Instruction : (i) All questions are compulsory. There are 6 questions in all. (ii) This question paper has five sections
More informationPHYSICS PAPER 1 (THEORY) (Three hours)
PHYSICS PAPER 1 (THEORY) (Three hours) (Candidates are allowed additional 15 minutes for only reading the paper. They must OT start writing during this time.) ---------------------------------------------------------------------------------------------------------------------
More informationDescribe the forces and torques exerted on an electric dipole in a field.
Learning Outcomes - PHYS 2015 Electric charges and forces: Describe the electrical nature of matter; Explain how an object can be charged; Distinguish between electrical conductors and insulators and the
More informationTHE INDIAN COMMUNITY SCHOOL, KUWAIT SECOND SEMESTER EXAMINATION PHYSICS (Theory)
CLASS:XII Marks : 70 General Instructions: THE INDIAN COMMUNITY SCHOOL, KUWAIT SECOND SEMESTER EXAMINATION 2016-17 PHYSICS (Theory) Time : Hrs (i) (ii) (iii) (iv) (v) All questions are compulsory. This
More informationTwo point charges, A and B, lie along a line separated by a distance L. The point x is the midpoint of their separation.
Use the following to answer question 1. Two point charges, A and B, lie along a line separated by a distance L. The point x is the midpoint of their separation. 1. Which combination of charges would yield
More informationName Final Exam May 1, 2017
Name Final Exam May 1, 217 This test consists of five parts. Please note that in parts II through V, you can skip one question of those offered. Some possibly useful formulas appear below. Constants, etc.
More informationPhysics 202 Final Exam Dec 20nd, 2011
Physics 202 Final Exam Dec 20nd, 2011 Name: Student ID: Section: TA (please circle): Daniel Crow Scott Douglas Yutao Gong Taylor Klaus Aaron Levine Andrew Loveridge Jason Milhone Hojin Yoo Instructions:
More information