SAMPLE QUESTION PAPER PHYSICS Class - XI

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1 SAMPLE QUESTION PAPER PHYSICS Class - XI

2 SAMPLE QUESTION PAPER PHYSICS Class - XI Time : 3 Hrs. Maximum Marks : 70 yôyó î!öˆïò yó # É ) Óà%! ÃŸ xyó! ƒü ) ˆÌˆÏÜ 8 ö Ó ÃˆÏŸ Ó Ã!ï!ê Ó çöƒ ö Ó ñ 9 ˆÌˆÏÜ 5 ö Ó ÃˆÏŸ Ó Ã!ï!ê Ó çöƒ ö Ó ñ 6 ˆÌˆÏÜ 6 ö Ó ÃˆÏŸ Ó Ã!ï!ê Ó çöƒ 3 ö Ó ~ÓÇ 7 ˆÌˆÏÜ 9 ö Ó ÃˆÏŸ Ó Ã!ï!ê Ó çöƒ 5 ö Ó ôó y xyˆïåè 3) y!ó Ü û yˆïó ˆÜ yö ÃˆÏŸ Ó ÚxÌÓyÛ!ÓÜ ÌyÜ ˆÏÓ öyñ ï ˆÏÓ ö ˆÏÓ Ó ~Ü!ê ÃˆÏŸ Ó çöƒ!óü ñ 3 ö ˆÏÓ Ó ~Ü!ê ÃˆÏŸ Ó çöƒ!óü ~ÓÇ 5 ö ˆÏÓ Ó ÓÜ Î!ê ÃˆÏŸ Ó çöƒ ~Ü!ê Ü ˆÏÓ!ÓÜ ˆòÄÎ y xyˆïåè Genaral Instruction :. All Questions are Conpulsory.. There is no overall choice. However, there is an internal choice in one question of marks weightage, one question of 3 marks and all the question of 5 marks. GROUP - A ) üüyeyó ò%!ê ˆû Ô!ï Ü Ó y! Ó öyü! á (Name two physical quantities having the same dimension) ) í zõ û yˆïó í zí!«æ Ó Ó ˆÓàÈÙÈ üî ˆ á!ã e!ê xaü ö Ü Ó (Draw the velocity - time graph when a body is thrown vertically upward) 3) 4) ~Ü!ê Äçö üy õü ÎˆÏsf òñyí yˆïöy ~Ü!ê ˆ yü xóyˆïô õï ö # ˆÏ ï áö ÎˆÏsf Ü # õyë ˆòáyˆÏÓ (A man falls freely standing over a weighing machine. What will be the weight shown by the machine?) ò%!ê ï ˆÏ Ó!fiÌï â Ï î à%îyaü ˆÏ ñ ï ò%!ê Ó üˆïôƒ â Ï î ˆÜ yî Ü ï ˆÏÓ 3 (What is the angle of friction between two surfaces in contact if the co-efficient of static friction is ) 3 5) ~Ü!ê û yó # Ä ~Ü!ê y Ü y Ó Ó û Ó ˆÏÓà üyö ˆÏ ˆÜ yö!ê Ó à!ï!= ˆÓ # SA lighter body and a heavy body have equal momentum, which one has the greater kinetic energy?) 6) ê Ü ñ ˆÜ Ô!îÜ có î Ä çyí ƒ ºyüˆÏÜ Ó õyó flõ!ó Ü õü!ê! á (Write the relation between torque, angular acceleration and moment of inertia.) 7) Y = 0 Sin ( t + 3 ) Ó ˆòy à!ï Ó ÃyÓ!Ω Ü ò yó üyö Ü ï (What is the epoch of the simple harmonic motion represented by Y = 0 Sin ( ) t + 3 8) ~Ü!ê ~Ü ü%á ˆáy y Ä ~Ü!ê ò% z ü%á ˆáy y ö ˆÌˆÏÜ!öÉ,ï ü) %ˆÏÓ Ó Ü õyˆïaü Ó xö% õyï Ü ï (What is the ratio of fundamental frequencies of one closed pipe and one open pipe of equal length) Group-B 9)!ö!!áï ÃŸ à%! Ó í z_ó òyä ˆòáyÄ ˆÎ!öí zê ˆÏöÓ ÃÌü à!ï )e!ê!mï #Î à!ï )ˆÏeÓ!ÓˆÏ Ï Ó ) õ SShow that Newton s first law of motion is the special case of Newton s second law of motion)!ï ö!ê ÓˆÏ Ó!Ü Î yî ˆÜ yö Ó Ó yˆïüƒó ï à%!! á (State the conditions for equilibrium of a body under the action of three forces) Page :

3 0) í z õˆïó í zë yó üî àƒy ˆÓ %ˆÏöÓ!fiÌ!ï!= Ä à!ï!= í zû Î z Ó,!Âô õyî ~ ˆ«ˆÏe!= Ó ÇÓ «î )e xüyöƒ Î í z_ˆïó Ó õˆï«î%!= òyä SWhen a Gas balloon rises up, both of its potential energy and kinetic energy increase. Does it violate the law of conservation of energy? Give reason of your answer.) ) m û Ó Ä r Óƒy yˆïâô Ó ~Ü!ê üï Ó,_yÜ yó Ó % ã yü!ï Ó ˆÜ wàyü# xˆï«ó yˆï õˆï«çyí ƒ ºyüÜ mr ñ ã yü!ï Ó ÓƒyˆÏ Ó yˆï õˆï«çyí ƒ ºyüÜ!öî Î Ü Ó (The moment of inertia of a plane thin circular disc of mass m and radius r about an axis passing through its centre perpendicular to its plane is mr. Find the moment of intertia about its diameter) ) x!û Ü Ï ç có ˆÏîÓ ˆÏAà õ,!ìó#ó àí âöˆïcó õü!öî Î Ü Ó (Find the relation between acceleration due to gravity and mean density of the earth) 3) A õ#í ö B!ÓÜ,!ï A Ä B ò%!ê!û ß õòyˆïì Ó ï yˆïó Ó õ#í ö!óü,!ï ˆ á!ã e ˆòáyˆÏöy!ö!!áï ÃŸ à%! Ó í z_ó Ü yó î í zˆïõ á Ü Ó i) ˆÜ yö õòyˆïì Ó zî Ç à%îyˆïaü Ó üyö ˆÓ # ii) ˆÜ yö õòyì ˆÓ # õ!ó üyˆïî öüö#î A Stress B Strain The stress - strain graphs of two different substances A and B are shown. Answer the following questions with reason. i) Which substance has more value of Young s modulous? ii) Which substance is more ductile? 4) ï y õà!ï!óòƒyó )öƒï ü )e!ê! á ~ z )e ˆÌˆÏÜ ï y õüyeyó ôyó îy!ê Óƒyáƒy Ü Ó (State the Zero-th law of Thermodynamics. Explain the concept of temperature from this law.) 5) àƒyˆï Ó à!ï ï ˆÏ_ Ó y yˆïîƒ àƒyˆï Ó ï y õüyey Óƒyáƒy Ü Ó (Explain the temperature of gas on the basis of kinetic theory of gas.) Group - C a 6) ~Ü!ê ˆû Ôï Óẙ! 3 b P = ˆÎáyˆÏö a, b, c ~ÓÇ d ã yó!ê ˆû Ôï Ó y! a, b, c ~ÓÇ d õ!ó üyˆï õ ï Ü Ó y e%!ê ÎÌyÜ ˆÏü %, c.d. 3%, 4% ~ÓÇ % p õ!ó üyˆï õ ï Ü Ó y e%!ê Ü ï 3 a 3 b (A physical quantity P =, where a, b, c and d are four physical quantities. The percentage of error c.d. in measurements of a, b, c, d are %, 3%, 4% and % respectively. What is the percentage of error in measurement of P? Page :

4 7) ÚˆÏÓà ÈÙÈ üî Û ˆ á!ã e õâô!ï Ó y yˆïîƒ Ãüyî Ü Ó É v = u + as, ~áyˆïö ÇˆÏÜ ï à%! ï yˆïòó Ãã! ï xˆïì ÓƒÓ,ï 3 using velocity - time graph method prove that v = u + as, here the symbols have their usual meanings. 8) Úâyï ÈÙÈ û Ó ˆÏÓàÛ (Impulse -momentum) í z õ õyòƒ!ê!óó,ï Ä Ãüyî Ü Ó ~Ü çö Óƒyê üƒyö m/s ÃyÌ!üÜ ˆÓˆÏà å%èˆïê xy y ~Ü!ê ÓˆÏ Ó ˆÓˆÏàÓ üyö x õ!ó Ó!ï ï ˆÓ ˆÏá ˆ yçy ˆÓy yˆïó!òˆïü ˆú Ó Í õy!ë ˆÏÎ!ò Ó!ê Ó û Ó 0.5 kg ˆÏ + ~Ó í z õó ÃÎ%= âyï!öî Î Ü Ó State and prove Impulse - Momentum Theorem. A batsman hits back a ball straight in the direction of the bowler without changing its initial speed of m/s. If the mass of ball is 0.5 kg. Determine the impulse imparted. 9) Óƒy!AÜ Ç Î%= ˆÜ yö Ó,_yÜ yó ÓÑyˆÏÜ à!ï # ~Ü!ê àyí #Ó o%!ï Ó #üy õ!ü ï Óẙ! üy y!öî Î Ü Ó 3 Obtain the expression for the speed limit of a car moving on a banked circular road. 0) ÚÜ yî ÈÙÈ!= Û í z õ õyòƒ!ê SWork - Energy theorem)!óó,ï ~ÓÇ Ãüyî Ü Ó 3 State and prove work - energy theorem. ) ˆÜ Ô!îÜ û Ó ˆÏÓˆÏàÓ ÇK y ˆ á Ãüyî Ü Ó ˆÎñ ˆÜ Ô!îÜ û Ó ˆÏÓˆÏàÓ õ!ó Óï ˆÏöÓ yó Ó!ê Ó í z õó ÃÎ%= ê ˆÏÜ Ó üyö 3 Define angular momentum. Prove that the rate of change of angular momentum. of a particle is equal to the torque acting on it. w ˆÜ Ô!îÜ ˆÓà õß ˆÜ yö Ó Ó â%î ö à!ï!= Ó Ó y! üy y!ê!öî Î Ü Ó ~ÓÇ çyí ƒºyüˆïü Ó ÇK y! á 3 Obtain an expression for kinetic energy of rotation of a body of angular velocity w and hence define moment of inertia. ) û) ü Î í z õ@ˇã Ü # ~Ü!ê û) ü Î í z õ@ˇãˆï Ó í zfã ï yó Ó y! üy y!ê!öó ) õî Ü Ó 3 What is a geostationary satellite? Derive the expression for height of a geostationay satellite. + 3)!eò!Ó %!Ü O. Kg û Ó!Ó! T 00 0 C ï y õüyeyó ˆÜ yö Ó ˆÏÜ 0 0 C ï y õüyeyó 0.5 Kg. çˆï ˆú y ˆÏ ã) í yhsˇ ï y õüyey Î 6 0 C Ó!ê Ó xyˆï õ!«ü ï y õ!öî Î Ü Ó ˆòÄÎ y xyˆïåèñ çˆï Ó xyˆï õ!«ü ï y õ 4. x 0 3 J/Kg/ 0 C. What is Tripple point? Find the specific heat of a body, when 0. kg of the body at 00 0 C is dropped into 0.5 kg of water at 0 0 C & the resulting temperate is 6 0 C, given specific heat of water is 4. x 0 3 J/Kg/ 0 C 4) ï y õ z!oö Ü # ~Ó Ü ü ò«ï y 00% ˆÏï õyˆïó!ü öy Óƒyáƒy Ü Ó + What is Heat Engine? Explain whether its efficiency can be 00%. 5) ˆÜ yö àï #Î ÇfiÌyÓ fl yô#öï yó üyey Ó ˆÏï Ü # ˆÓyé ~Ó ˆÏAà àƒyˆï Ó ò% z xyˆï õ!«ü ï yˆï õó xö% õyˆïï Ó õü!ê!öî Î + Ü Ó What do you mean by Degree of freedom of a kinetic system? Derive its relation with the ratio of two specific heats of gases. 6) ˆòáyÄ ˆÎ Ó ˆòy à!ï ˆÏï ˆüyê!= Ó ÇÓ «î Î 3 Show that total energy is conserved in simple harmonic motion. GROUP - D 7) üó,_#î à!ï ˆÏï â)î yî üyö ~Ü!ê Ó Ó x!û ˆÏÜ w có ˆÏîÓ Ó y! üy y!öî Î Ü Ó Ó,!T Ó!òˆÏö ã hsˇ àyí #Ó üˆïôƒ ÓˆÏ ÌyÜ y ˆÜ yö Îye#Ó Ü yˆïåè áyí y û yˆïó ö#ˆïã Ó!òˆÏÜ õï ö # Ó,!T Ó ôyó y!ï Î Ü û yˆïó õí ˆÏåÈ ÓˆÏ üˆïö Î ˆÜ ö 3 + (Derive an expression for the centripetal acceleration of a body executing uniform circular motion. Why do the vertically falling rain drops appear to be inclined to a person sitting inside a moving car?) Page : 3

5 ˆòáyÄ ˆÎ ~Ü!ê ÃyˆÏ Ó à!ï õì x!ôó,_yü yó Ãy õ!ü ï!öˆï Ó Ó y! à%! Ó ày!î!ï Ü õü!öî Î Ü Ó i) Ó y!ôü í zfã ï y ii) í z!a!ï Ü y iii) ÃˆÏ«õ #üy + 3 (Show that the path of a projective is parabolic. With reference to projectile obtain relations for the following : i) Maximum height. ii) Time of flight iii) Horizontal range.) 8) ÓyˆÏö y! Ó í z õ õyòƒ!ê!óó,ï Ü Ó ~ÓÇ Ãüyî Ü Ó ~Ó #üyóâôï y í zˆïõ á Ü Ó (State and prove Bernoulli s theorem. Write its limitations.) 3 + ~Ü!ê Ü! Ü öˆï ï Ó ˆÏ Ó xyˆïó y ˆÏîÓ ú ˆÏ ï Ó hflïˆïω Ó í zfã ï yó Ó y! üy y!öî Î Ü Ó ~Ü!ê Ü! Ü öˆï ˆÜ yö ï Ó Îï ê% Ü% í zfã ï yî í zë ˆÏï õyˆïó Ü! Ü öˆï Ó òâ ƒ Î!ò ï yó ˆã ˆÏÎ Ü ü Î ï áö ï Ó ˆÏ Ó Ü # âê ˆÏÓ 3 + (Derive an expression for the height attained due to rise of liquid in a capillary tube. What happens when the length of a capillary tube is less than the height up to which a liquid may rise in it?) 9) fl Ó Ü õ Ü yˆïü ÓˆÏ fl Ó Ü õ %öˆïï ï Ó Aà ò%!ê Ó Ü õyˆïaü Ó õyì Ü ƒ 0 ~Ó Ü ü Î ˆÜ ö ˆÜ yö àƒy #Î üyôƒˆïü ò%!ê ï Ó ˆÏAàÓ í z õ!ó õyˆïï Ó ú ˆÏ ˆ ˆÏÜ ˆÏ[ 6!ê fl Ó Ü õ í zí õß Î ï Ó Aà ò%!ê Ó ï Ó Aà Ïòâ ƒ ÎÌyÜ ˆÏü 50 cm ~ÓÇ 50.5 cm ˆÏ Ä z üyôƒˆïü ˆÏ Ó ˆÓà!öî Î Ü Ó ++3 (What is called beat? Why is the difference between frequencies of waves less than 0 for hearing beats. In a gaseous medium 6 beats are produced due to superposition of two waves. If the wave lengths of the two waves are 50 cm and 50.5 cm respectively, determine the velocity of sound in that medium.) ê yö Ü Ó y ï yˆïó Ó!ï Î Ü Ü õˆïöó )eà%!!óó,ï Ü Ó ~Ü!ê ê yö Ü Ó y ï yó ˆÌˆÏÜ!öÉ,ï ü) %ÏˆÏÓ Ó Ü õyaü 56 Hz, Î!ò ï yˆïó Ó ê yö x õ!ó Ó!ï ï ˆÓ ˆÏá ï yˆïó Ó òâ ƒ 0 cm Ü üyˆïöy Î ï ˆÏÓ!öÉ,ï ü) %ˆÏÓ Ó Ü õyaü Î 30 Hz ï yˆïó Ó ÃyÌ!üÜ òâ ƒ Ü ï!åè 3 + (State the laws of transverse vibration of a stressed string. A stretched wire emits a fundamental tone of 56 Hz, Keeping the tension unchanged if the length of the wire is decreased by 0 cm, the frequency of emitted fundamental tone is 30 Hz. What was the initial length of the wire?) Subject - Physics Project - XI Models to show the ) Expansion of solid on heating. ) Construction of Mass-measurement device using the idea of centre of gravity. 3) Construction of calorimeter and measurement of its water equivalent. 4) Construction of a second s pendulum. 5) Model to show resonance. 6) Model to exhibit the formation of beats using pendulum of different lengths. 7) Model to study the co-efficient of friction. Page : 4

SAMPLE QUESTION PAPER Class- XI Sub- MATHEMATICS

SAMPLE QUESTION PAPER Class- XI Sub- MATHEMATICS SAMPLE QESTION PAPER Class- XI Sub- MATHEMATICS SAMPLE QESTION PAPER Class- XI Sub- MATHEMATICS Time : Hrs. Maximum Marks : 00 General Instructions :. All the questions are compulsory.. The question paper