Physics Questions
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![3 Figure 6 64 shows a balanced Wheatstone bridge R 5Q D Q 50 92 A S 10 22 B G P 100 S2 www C Fig 6 64 a If P is slightly increased the current in the galvanometer flows from C to A b IfP is slightly increased the current in the galvanometer flows from A to C c If Q is slightly increased the current in the galvanometer flows from C to A d If Q is slightly increased the current in the galvanometer flows from A to C Two voltmeters and two resistances are connected as](https://media.kunduz.com/media/sug-question-candidate/20200912051851918081-1954177.jpg?w=256)
Physics
Current Electricity3 Figure 6 64 shows a balanced Wheatstone bridge R 5Q D Q 50 92 A S 10 22 B G P 100 S2 www C Fig 6 64 a If P is slightly increased the current in the galvanometer flows from C to A b IfP is slightly increased the current in the galvanometer flows from A to C c If Q is slightly increased the current in the galvanometer flows from C to A d If Q is slightly increased the current in the galvanometer flows from A to C Two voltmeters and two resistances are connected as
![F a 1 F c 3 F d 4 F 93 Four capacitors are connected in a circuit as shown in the figure The effective capacitance in F between points A and B will be a 28 9 A b 4 2 F 2 F 12 F 11 2 F B c 5 V 01 d 18 98 There a capacit The e in pa 99 The W pc V](https://media.kunduz.com/media/sug-question-candidate/20200716051804211122-1882650.jpg?w=256)
Physics
CapacitorsF a 1 F c 3 F d 4 F 93 Four capacitors are connected in a circuit as shown in the figure The effective capacitance in F between points A and B will be a 28 9 A b 4 2 F 2 F 12 F 11 2 F B c 5 V 01 d 18 98 There a capacit The e in pa 99 The W pc V
![One face of a rectangular glass plate 6 cm thick is silvered An object held 8 cm in front of the first face forms an image 12 cm behind the silvered face The refractive index of the glass is CPMT 1999 a 0 4 c 1 2 b 0 8 d 1 6](https://media.kunduz.com/media/sug-question-candidate/20200712055527007059-1877363.jpg?w=256)
Physics
Geometrical OpticsOne face of a rectangular glass plate 6 cm thick is silvered An object held 8 cm in front of the first face forms an image 12 cm behind the silvered face The refractive index of the glass is CPMT 1999 a 0 4 c 1 2 b 0 8 d 1 6
![2 The atmospheric pressure on a hill is 68 cm of mercury What do you understand from the statement 3 How does atmospheric pressure change with the change in altitude 4 Briefly describe construction of a simple barometer](https://media.kunduz.com/media/sug-question-candidate/20200912031234428225-1966742.jpg?w=256)
Physics
Kinetic Theory of Gases2 The atmospheric pressure on a hill is 68 cm of mercury What do you understand from the statement 3 How does atmospheric pressure change with the change in altitude 4 Briefly describe construction of a simple barometer
![The position time graphs of two cars A and B are straight lines making angles 30 and 60 with the time axis respectively The ratio of velocities of A and B is 1 1 3 3 3 1 2 1 3 4 3 1 on holow The](https://media.kunduz.com/media/sug-question-candidate/20200910162303772831-2021402.jpg?w=256)
Physics
KinematicsThe position time graphs of two cars A and B are straight lines making angles 30 and 60 with the time axis respectively The ratio of velocities of A and B is 1 1 3 3 3 1 2 1 3 4 3 1 on holow The
![3 Block A of mass m is to be kept at rest against a smooth vertical wall by applying a force F as shown in figure The force required is 1 mg 2 2mg 3 mg 2 mg A m 30 F](https://media.kunduz.com/media/sug-question-candidate/20200910181210918298-1911788.jpg?w=256)
Physics
Kinematics3 Block A of mass m is to be kept at rest against a smooth vertical wall by applying a force F as shown in figure The force required is 1 mg 2 2mg 3 mg 2 mg A m 30 F
![3 Which one of the following is not an assumption of kinetic theory of gases 1 The volume of a gas molecule is negligible 2 The gravitational attraction between the gas molecules is negligible 3 The density of gas is same at all points 4 The change in momentum of gas molecules is negligible](https://media.kunduz.com/media/sug-question-candidate/20200717144441386450-1443517.jpg?w=256)
Physics
Kinetic Theory of Gases3 Which one of the following is not an assumption of kinetic theory of gases 1 The volume of a gas molecule is negligible 2 The gravitational attraction between the gas molecules is negligible 3 The density of gas is same at all points 4 The change in momentum of gas molecules is negligible
![The graph between Ek and is P E kinetic energy and p momentum 1 Ek 3 E 1 p FL 2 Ek 4 EK 1 p](https://media.kunduz.com/media/sug-question-candidate/20200911161545167498-1993832.jpg?w=256)
Physics
KinematicsThe graph between Ek and is P E kinetic energy and p momentum 1 Ek 3 E 1 p FL 2 Ek 4 EK 1 p
![10 An aeroplane moving horizontally from west to eas with some velocity and with an acceleration 5 m s drops a food packet at some instant Then The path of the packet is parabolic with respect to ground b A person sitting on the aeroplane shall see the packet is always vertically below the plane c With respect to plane the packet travels in straight line making an angle tan 1 2 west vertical 1 d With respect to plane the packet travels in straight line making an angle tan 1 2 east vertical e The packet moves in a parabolic path with respec to aeroplane](https://media.kunduz.com/media/sug-question-candidate/20200715073854374744-1867332.jpg?w=256)
Physics
Kinematics10 An aeroplane moving horizontally from west to eas with some velocity and with an acceleration 5 m s drops a food packet at some instant Then The path of the packet is parabolic with respect to ground b A person sitting on the aeroplane shall see the packet is always vertically below the plane c With respect to plane the packet travels in straight line making an angle tan 1 2 west vertical 1 d With respect to plane the packet travels in straight line making an angle tan 1 2 east vertical e The packet moves in a parabolic path with respec to aeroplane
![The distance between slit and biprism and between biprism and screen are 50 cm each The angle of biprism is 179 and its refractive index is 1 5 If the distance between successive frings is 0 0135 cm then the wavelength of light is a 5893 x 10 0 m c 5893 x 10 m b 5893 x 10 cm d 2946 x 10 cm](https://media.kunduz.com/media/sug-question-candidate/20200718203325724654-1766139.jpg?w=256)
Physics
Wave OpticsThe distance between slit and biprism and between biprism and screen are 50 cm each The angle of biprism is 179 and its refractive index is 1 5 If the distance between successive frings is 0 0135 cm then the wavelength of light is a 5893 x 10 0 m c 5893 x 10 m b 5893 x 10 cm d 2946 x 10 cm
![7 The graph between displacement and time for a particle moving with uniform acceleration is a a Straight line with a positive slope b Parabola c Ellipse d Straight line parallel to time axis](https://media.kunduz.com/media/sug-question-candidate/20200721092705133627-1887416.jpg?w=256)
Physics
Kinematics7 The graph between displacement and time for a particle moving with uniform acceleration is a a Straight line with a positive slope b Parabola c Ellipse d Straight line parallel to time axis
![A spherical black body with a radius of 12 cm radiates 450 watt power at 500 K If the radius were halved and the temperature doubled the power radiated in watt would be NEET 2017 1 225 2 450 3 1000 4 1800](https://media.kunduz.com/media/sug-question-candidate/20200910092142279953-2014318.jpg?w=256)
Physics
Transmission of heatA spherical black body with a radius of 12 cm radiates 450 watt power at 500 K If the radius were halved and the temperature doubled the power radiated in watt would be NEET 2017 1 225 2 450 3 1000 4 1800
![Example 7 13 A thin uniform rod of length and mass m rotates uniformly with an angularly velocity in a horizontal plane about a vertical axis passing through one of its ends Determine the tension in the rod as a function of the distance x from the rotation axis X idxi Fig 7 238 T dT](https://media.kunduz.com/media/sug-question-candidate/20200704122655242476-1614931.jpg?w=256)
Physics
RotationExample 7 13 A thin uniform rod of length and mass m rotates uniformly with an angularly velocity in a horizontal plane about a vertical axis passing through one of its ends Determine the tension in the rod as a function of the distance x from the rotation axis X idxi Fig 7 238 T dT
![iv The magnitude of area of the parallelogram formed by the adjacent sides of vectors A 31 21 a nd 3 21 2k is Sol](https://media.kunduz.com/media/sug-question-candidate/20200712212917089440-1877175.jpg?w=256)
Physics
Basic Physicsiv The magnitude of area of the parallelogram formed by the adjacent sides of vectors A 31 21 a nd 3 21 2k is Sol
![The measure of mass and volume of a body are 2 00 g and 5 0 cm respectively with possibl errors of 0 01 g and 0 1 cm What would be the maximum permissible error in its density Hint Ad Am AV Ad dx m V Am AV m V where d m V 1](https://media.kunduz.com/media/sug-question-candidate/20200911001719699188-2004754.jpg?w=256)
Physics
ExperimentsThe measure of mass and volume of a body are 2 00 g and 5 0 cm respectively with possibl errors of 0 01 g and 0 1 cm What would be the maximum permissible error in its density Hint Ad Am AV Ad dx m V Am AV m V where d m V 1
![In the figure shown V b at t 1 s is ab 2H a 1 30 V 202 2F b 4V www1100000 1 q 4t C 2 30 V 3 20 V 4 2 res](https://media.kunduz.com/media/sug-question-candidate/20200911122652204050-2023676.jpg?w=256)
Physics
AC CircuitsIn the figure shown V b at t 1 s is ab 2H a 1 30 V 202 2F b 4V www1100000 1 q 4t C 2 30 V 3 20 V 4 2 res
![5 The length of one edge of a glass plate of thickness 0 2 cm is 9 8 cm If this edge of the glass plate touches the surface of a liquid of surface tension 60 dyne cm then it is pulled down with a force of Assume that angle of contact to be zero 1 1100 dyne 3 1000 dyne 2 2400 dyne 4 1200 dyne](https://media.kunduz.com/media/sug-question-candidate/20200911051216884969-1928856.jpg?w=256)
Physics
Fluids5 The length of one edge of a glass plate of thickness 0 2 cm is 9 8 cm If this edge of the glass plate touches the surface of a liquid of surface tension 60 dyne cm then it is pulled down with a force of Assume that angle of contact to be zero 1 1100 dyne 3 1000 dyne 2 2400 dyne 4 1200 dyne
![50 When the electron of a hydrogen like atom jumps from a higher energy level to a lower energy level then 1 Angular momentum of the electron remains constant 2 Kinetic energy of the electron increases 3 Wavelength of de Broglie wave associated with motion of the electron increases 1 4 Potential oporgy increases X](https://media.kunduz.com/media/sug-question-candidate/20200716130506526358-1880928.jpg?w=256)
Physics
Atomic Structure50 When the electron of a hydrogen like atom jumps from a higher energy level to a lower energy level then 1 Angular momentum of the electron remains constant 2 Kinetic energy of the electron increases 3 Wavelength of de Broglie wave associated with motion of the electron increases 1 4 Potential oporgy increases X
![In Fig 5 52 connected 2 10 2 and R 20 Determine th Illustration 5 32 equivalent resistance between points i A and D and ii as shown Given R and C com B R www E www R wwww R www www R R R C](https://media.kunduz.com/media/sug-question-candidate/20200910083754537669-2018404.jpg?w=256)
Physics
Current ElectricityIn Fig 5 52 connected 2 10 2 and R 20 Determine th Illustration 5 32 equivalent resistance between points i A and D and ii as shown Given R and C com B R www E www R wwww R www www R R R C
![The curve for the moment of inertia of a sphere of constant mass M versus distance of axis from its centre 1 3 Hind V X 2 4 X](https://media.kunduz.com/media/sug-question-candidate/20200718072336836572-1401410.jpg?w=256)
Physics
RotationThe curve for the moment of inertia of a sphere of constant mass M versus distance of axis from its centre 1 3 Hind V X 2 4 X
![Two thin conducting plates very large parallel to each other carrying total charges A and 20 A respectively where A is the area of each plate are placed in a uniform external electric field E as shown Find the surface charge on each surface E](https://media.kunduz.com/media/sug-question-candidate/20200721080945416254-1332181.jpg?w=256)
Physics
Electric Field and PotentialTwo thin conducting plates very large parallel to each other carrying total charges A and 20 A respectively where A is the area of each plate are placed in a uniform external electric field E as shown Find the surface charge on each surface E
![6 The acceleration a of a particle starting from rest varies with time according to relation a at B The velocity of the particle after a time t will be www a b 012 2 B Bt c at d at 2 Bt at B 2](https://media.kunduz.com/media/sug-question-candidate/20200721092407912505-1887416.jpg?w=256)
Physics
Kinematics6 The acceleration a of a particle starting from rest varies with time according to relation a at B The velocity of the particle after a time t will be www a b 012 2 B Bt c at d at 2 Bt at B 2
![Find the electric field at the origin due to the line charge ABCD of linear charge density 2 a 0 0 B y C 0 a 0 a 0 0](https://media.kunduz.com/media/sug-question-candidate/20200716145756743591-1751165.jpg?w=256)
Physics
Electric Field and PotentialFind the electric field at the origin due to the line charge ABCD of linear charge density 2 a 0 0 B y C 0 a 0 a 0 0
![In the circuit shown the resistor is 1 A when the points P and M are connected to a d c voltage source The potential difference between the points M and N is 402 mir P wwwwwww 352 wwwww 0 5 www 0 52 1 0 5 volts 1 5 volts N X www 1Q M 2 3 2 volts 4 1 0 volt](https://media.kunduz.com/media/sug-question-candidate/20200912035905805099-1348182.jpg?w=256)
Physics
Current ElectricityIn the circuit shown the resistor is 1 A when the points P and M are connected to a d c voltage source The potential difference between the points M and N is 402 mir P wwwwwww 352 wwwww 0 5 www 0 52 1 0 5 volts 1 5 volts N X www 1Q M 2 3 2 volts 4 1 0 volt
![ng emf E E cos 100 m st cos500 m st S is connected in series with a capacitor and a resistor The steady state current in the circuit is found to be i i cos 100 r s t 9 i cos 500 m st i i b i i c i i a i i d The information is insufficient to find the relation between i and i 2 An AC so](https://media.kunduz.com/media/sug-question-candidate/20200721172527522034-1870041.jpg?w=256)
Physics
AC Circuitsng emf E E cos 100 m st cos500 m st S is connected in series with a capacitor and a resistor The steady state current in the circuit is found to be i i cos 100 r s t 9 i cos 500 m st i i b i i c i i a i i d The information is insufficient to find the relation between i and i 2 An AC so
![The displacement x of a body of mass 1 kg on smooth horizontal surface as a function of time t is given by 1 where x is in metres and t is in seconds Find the work done by the external agent for the first one 3 second X](https://media.kunduz.com/media/sug-question-candidate/20200911144425338780-1993832.jpg?w=256)
Physics
Work, power & energyThe displacement x of a body of mass 1 kg on smooth horizontal surface as a function of time t is given by 1 where x is in metres and t is in seconds Find the work done by the external agent for the first one 3 second X
![Che er 1 22 A capillary tube of radius 0 50 mm is dipped vertically in a pot of water Find the difference between the pressure of the water in the tube 5 0 cm below the surface and the atmospheric pressure Surface tension of water 0 075 Nm](https://media.kunduz.com/media/sug-question-candidate/20200712172012424829-1870407.jpg?w=256)
Physics
FluidsChe er 1 22 A capillary tube of radius 0 50 mm is dipped vertically in a pot of water Find the difference between the pressure of the water in the tube 5 0 cm below the surface and the atmospheric pressure Surface tension of water 0 075 Nm
![11 A in a moving vertical plane At a certain when instant the link is inclined 60 to the horizontal the point A is moving horizontally at 3 m s while moving in the vertical direction What is velocity of B 1 a 55115 m s 3 m s A VB4 60 b 2 3 m s 3](https://media.kunduz.com/media/sug-question-candidate/20200708172042462166-1681262.jpg?w=256)
Physics
Kinematics11 A in a moving vertical plane At a certain when instant the link is inclined 60 to the horizontal the point A is moving horizontally at 3 m s while moving in the vertical direction What is velocity of B 1 a 55115 m s 3 m s A VB4 60 b 2 3 m s 3
![22 What should be the current in branch BD after 22 switch S is closed Se ostrzy 152 201 1 1A 3 8A 19 B 352 S 252 402 25V 2 2A 4 Zero 3x7 4 zry 63](https://media.kunduz.com/media/sug-question-candidate/20200911194149740232-2016309.jpg?w=256)
Physics
Current Electricity22 What should be the current in branch BD after 22 switch S is closed Se ostrzy 152 201 1 1A 3 8A 19 B 352 S 252 402 25V 2 2A 4 Zero 3x7 4 zry 63
![27 shows a rod PQ of length 20 0 cm and mass 200 g suspended through a fixed point O by two threads of lengths 20 0 cm each A magnetic field of strength 0 500 T exists in the vicinity of the wire PQ as shown in the figure The wires connecting PQ with the battery are loose and exert no force on PQ a Find the tension in the threads when the switch S is open b A current of 2 0 A is established when the switch S is closed Find the tension in the threads now PA S](https://media.kunduz.com/media/sug-question-candidate/20200721172813763218-1870041.jpg?w=256)
Physics
Magnetic Field due to current27 shows a rod PQ of length 20 0 cm and mass 200 g suspended through a fixed point O by two threads of lengths 20 0 cm each A magnetic field of strength 0 500 T exists in the vicinity of the wire PQ as shown in the figure The wires connecting PQ with the battery are loose and exert no force on PQ a Find the tension in the threads when the switch S is open b A current of 2 0 A is established when the switch S is closed Find the tension in the threads now PA S
![A dip needle vibrates in a vertical plane perpendicular to the geographical meridian The time period of vibration is found to be 2 second The same needle is then allowed to vibrate in the horizontal plane and the time period is again found to be 2 second If the angle of declination is 60 then the true angle of dip is v 1 tan 1 3 45 1 2 2 tan 2 T 22 timbe tan 2](https://media.kunduz.com/media/sug-question-candidate/20200909104745004757-1868232.jpg?w=256)
Physics
Unit & DimensionsA dip needle vibrates in a vertical plane perpendicular to the geographical meridian The time period of vibration is found to be 2 second The same needle is then allowed to vibrate in the horizontal plane and the time period is again found to be 2 second If the angle of declination is 60 then the true angle of dip is v 1 tan 1 3 45 1 2 2 tan 2 T 22 timbe tan 2
![in the direction During the perio is the componen low and this et along the river bank of a river flowing at a speed as shown in figure What minimum speed relative to water should the man have so that he can reach point B In which direction should he swim V 0 45 A D A Sol Let v be the speed of boatman in still water B 45 B u u b y I c For and Her rive this d t or](https://media.kunduz.com/media/sug-question-candidate/20200911032217688719-1937757.jpg?w=256)
Physics
Kinematicsin the direction During the perio is the componen low and this et along the river bank of a river flowing at a speed as shown in figure What minimum speed relative to water should the man have so that he can reach point B In which direction should he swim V 0 45 A D A Sol Let v be the speed of boatman in still water B 45 B u u b y I c For and Her rive this d t or
![A sphere of mass m is held between two smooth inclined walls For sin 37 3 The normal reaction of the wall 2 is equal to 2 A 37 37 mg Correct Answer mg sin 74 mg cos 74 None of theso SWING](https://media.kunduz.com/media/sug-question-candidate/20200709062028863884-1388437.jpg?w=256)
Physics
Newton's law of motionA sphere of mass m is held between two smooth inclined walls For sin 37 3 The normal reaction of the wall 2 is equal to 2 A 37 37 mg Correct Answer mg sin 74 mg cos 74 None of theso SWING
![5 Three concentric spherical shells have radii a b and c a b c and have surface charge densities o o and o respectively If VA V and V denote the potentials of the three shells then for c a b we have 1 Vc VB VA C 3 Vc VB VA C 2 Vc V VB A 4 V V V C B A](https://media.kunduz.com/media/sug-question-candidate/20200830235638184587-1461613.jpg?w=256)
Physics
Electric Field and Potential5 Three concentric spherical shells have radii a b and c a b c and have surface charge densities o o and o respectively If VA V and V denote the potentials of the three shells then for c a b we have 1 Vc VB VA C 3 Vc VB VA C 2 Vc V VB A 4 V V V C B A
![al 81 In the given figure the angle between the 9 Dalected rays is equal to n g e r 82 1 A 2 2 A 3 3 A 4 4A](https://media.kunduz.com/media/sug-question-candidate/20200706141409379628-1745870.jpg?w=256)
Physics
Wave Opticsal 81 In the given figure the angle between the 9 Dalected rays is equal to n g e r 82 1 A 2 2 A 3 3 A 4 4A
![spring is 100 N m Extension produced in the spring in equilibrium is g 10 m s 1 10 cm 3 30 cm 3Kg reelle 3Kg 2 20 cm 440 cm](https://media.kunduz.com/media/sug-question-candidate/20200902160029995098-1863386.jpg?w=256)
Physics
Frictionspring is 100 N m Extension produced in the spring in equilibrium is g 10 m s 1 10 cm 3 30 cm 3Kg reelle 3Kg 2 20 cm 440 cm
![0 Certain quantity of water cools from 70 C to 60 in the first 5 minutes and to 54 C in the nex minutes The temperature of the surroundings i AIPMT 20 1 45 C 2 20 C 3 42 C 4 10 C](https://media.kunduz.com/media/sug-question-candidate/20200906172446608652-1944793.jpg?w=256)
Physics
Transmission of heat0 Certain quantity of water cools from 70 C to 60 in the first 5 minutes and to 54 C in the nex minutes The temperature of the surroundings i AIPMT 20 1 45 C 2 20 C 3 42 C 4 10 C
![41 A skater weighing 70 kg stands on ice He throws a stone weighing 3 kg with a velocity of 8 m s in a horizontal direction Find the distance through which the skater moves back Given 0 02 Ans 0 3 m 12 A block is laid gently on a horizontal conveyor belt moving at a speed of 5 5 m s If the co efficient of friction between the block and the belt is 0 45 find how far the block will move on the belt before coming to rest on Ans 3 43 m it](https://media.kunduz.com/media/sug-question-candidate/20200910043219886212-2009864.jpg?w=256)
Physics
Kinematics41 A skater weighing 70 kg stands on ice He throws a stone weighing 3 kg with a velocity of 8 m s in a horizontal direction Find the distance through which the skater moves back Given 0 02 Ans 0 3 m 12 A block is laid gently on a horizontal conveyor belt moving at a speed of 5 5 m s If the co efficient of friction between the block and the belt is 0 45 find how far the block will move on the belt before coming to rest on Ans 3 43 m it
![Example 11 11 When light of wavelength 4000 A is incident on a barium emitter emitted photoelectrons in a transverse magnetic field strength B 52x10 6 T moves in a circular path Find the radius of the circle Given work function of 31 kg barium is 2 5 eV and mass of electron is 9 1 x107 e 1 6x10 1 C h 6 6x10 34 Js](https://media.kunduz.com/media/sug-question-candidate/20200906092525682625-1992623.jpg?w=256)
Physics
Magnetic Field due to currentExample 11 11 When light of wavelength 4000 A is incident on a barium emitter emitted photoelectrons in a transverse magnetic field strength B 52x10 6 T moves in a circular path Find the radius of the circle Given work function of 31 kg barium is 2 5 eV and mass of electron is 9 1 x107 e 1 6x10 1 C h 6 6x10 34 Js
![A parallel plate capacitor has capacitance C If the charges the plates are Q and 30 find the i charges at the inner surfaces of the plates ii potential difference between the plates iii charge flown if the plates are connected iv energy lost by the capacitor in iii v charge flown if any plate is earthed 2 d](https://media.kunduz.com/media/sug-question-candidate/20200813102756156299-1297968.jpg?w=256)
Physics
Electric Field and PotentialA parallel plate capacitor has capacitance C If the charges the plates are Q and 30 find the i charges at the inner surfaces of the plates ii potential difference between the plates iii charge flown if the plates are connected iv energy lost by the capacitor in iii v charge flown if any plate is earthed 2 d
![convex lens of focal length f is placed in contact with a concave lens of the same foca ength The equivalent focal length of the combination is A zero B infinity C f D](https://media.kunduz.com/media/sug-question-candidate/20200904075230901359-1471506.jpg?w=256)
Physics
Geometrical Opticsconvex lens of focal length f is placed in contact with a concave lens of the same foca ength The equivalent focal length of the combination is A zero B infinity C f D
![The variation of velocity of a particle moving along a straight line is as shown in the figure given below The distance travelled by the particle in 5 s is 1 60 m 3 40 m v m s 20 10 0 12 A B bols DE C 3 4 5 t s 2 30 m 4 50 m](https://media.kunduz.com/media/sug-question-candidate/20200910162211729645-2021402.jpg?w=256)
Physics
KinematicsThe variation of velocity of a particle moving along a straight line is as shown in the figure given below The distance travelled by the particle in 5 s is 1 60 m 3 40 m v m s 20 10 0 12 A B bols DE C 3 4 5 t s 2 30 m 4 50 m
![146 Light of uniform intensity impinges perpendicularly on a totally reflecting surface If the area of the surface is halved the radiation force on it will become double a a b half c four times d one fourth](https://media.kunduz.com/media/sug-question-candidate/20200908112053907998-2008655.jpg?w=256)
Physics
Atomic Structure146 Light of uniform intensity impinges perpendicularly on a totally reflecting surface If the area of the surface is halved the radiation force on it will become double a a b half c four times d one fourth
![The circuit shown here has two batteries of 8 V 16 V and three resistors 30 90 and on and a capacitor of 5 F how much is current i in the circuit in steady state 1 1 6A Check all that apply 000 A B C S 2 0 67A HHM SpF 902 3 2 5A 16V 4 0 25 A](https://media.kunduz.com/media/sug-question-candidate/20200813064412280022-1892241.jpg?w=256)
Physics
Current ElectricityThe circuit shown here has two batteries of 8 V 16 V and three resistors 30 90 and on and a capacitor of 5 F how much is current i in the circuit in steady state 1 1 6A Check all that apply 000 A B C S 2 0 67A HHM SpF 902 3 2 5A 16V 4 0 25 A
![3 Consider the situation of figure 29 Q3 The work done in taking a point charge from P to A is WA from P to B is WB and from P to C is Wc a WA WB Wc c WA WB Wc b WA WB Wc d None of these C 1 I 1 q B A P](https://media.kunduz.com/media/sug-question-candidate/20200813070537767592-1896642.jpg?w=256)
Physics
Electric Field and Potential3 Consider the situation of figure 29 Q3 The work done in taking a point charge from P to A is WA from P to B is WB and from P to C is Wc a WA WB Wc c WA WB Wc b WA WB Wc d None of these C 1 I 1 q B A P
![C 0 25 sec D 0 5 sec The maximum acceleration of a particle in SHM is made two times keeping the maximum speed to be constant It is possible when A amplitude of oscillation is doubled while frequency remains constant B amplitude is doubled while frequency is halved C frequency is doubled while amplitude is halved D frequency is doubled while amplitude remains constant](https://media.kunduz.com/media/sug-question-candidate/20200720075303215042-1471506.jpg?w=256)
Physics
Simple harmonic motionC 0 25 sec D 0 5 sec The maximum acceleration of a particle in SHM is made two times keeping the maximum speed to be constant It is possible when A amplitude of oscillation is doubled while frequency remains constant B amplitude is doubled while frequency is halved C frequency is doubled while amplitude is halved D frequency is doubled while amplitude remains constant
![Two identical discs of equal radiu mass are kept in contact on a frictionless table A third disc of same mass but of double radius strikes them symmetrically and comes to rest after impact The co efficient of restitution is 08 1 3 3 us dations ted 2 1 1 2 3 4](https://media.kunduz.com/media/sug-question-candidate/20200909153700073789-1992610.jpg?w=256)
Physics
RotationTwo identical discs of equal radiu mass are kept in contact on a frictionless table A third disc of same mass but of double radius strikes them symmetrically and comes to rest after impact The co efficient of restitution is 08 1 3 3 us dations ted 2 1 1 2 3 4
![a region sible that B region to 10 Let E and B denote electric and magnetic fields in a frame S and E and B in another frame S moving with respect to S at a velocity Two of the following equations are wrong Identify them b E E d E E vB it s a By B VE 2 C c By B vE UB](https://media.kunduz.com/media/sug-question-candidate/20200721151739117550-1870407.jpg?w=256)
Physics
Electric Field and Potentiala region sible that B region to 10 Let E and B denote electric and magnetic fields in a frame S and E and B in another frame S moving with respect to S at a velocity Two of the following equations are wrong Identify them b E E d E E vB it s a By B VE 2 C c By B vE UB
![the driver thrown e in touch we would f the bus and the owever een the sudden ictional ur feet strictly s some parts go with ere it is ore we opens of the e body opens p due lative e bus move ward e into ally hip ta the ter hat Exert hall nal the grens is Momentum Momentum of a body is defined to be the product of its mass m and velocity v and is denoted by p 5 1 Momentum is clearly a vector quantity The following common experiences indicate the importance of this quantity for considering the effect of force on motion p mv Suppose a light weight vehicle say a small car and a heavy weight vehicle say a loaded truck are parked on a horizontal road We all know that a much greater force is needed to push the truck than the car to bring them to the same speed in same time Similarly a greater opposing force is needed to stop a heavy body than a light body in the same time if they are moving with the same speed If two stones one light and the other heavy are dropped from the top of a building a person on the ground will find it easier to catch the light stone than the heavy stone The mass of a body is thus an important parameter that determines the effect of force on its motion the mos Same Sper Speed is another important parameter tout heavy consider A bullet fired by a gun can easily pierce human tissue before it stops resulting in casualty The same bullet fired with moderate speed will not cause much damage Thus for a given mass the greater the speed the greater is the opposing force needed to stop the body in a certain time Taken together the product of mass and velocity that is momentum is evidently a relevant variable of motion The greater the change in the momentum in a given time the greater is the force that needs to be applied A seasoned cricketer catches a cricket ball coming in with great speed far more easily than a novice who can hurt his hands in the Ono raggon in that the cricketer allows a both Stone tene sequire force to stopte a light stone](https://media.kunduz.com/media/sug-question-candidate/20200702033804564557-1868773.jpg?w=256)
Physics
Newton's law of motionthe driver thrown e in touch we would f the bus and the owever een the sudden ictional ur feet strictly s some parts go with ere it is ore we opens of the e body opens p due lative e bus move ward e into ally hip ta the ter hat Exert hall nal the grens is Momentum Momentum of a body is defined to be the product of its mass m and velocity v and is denoted by p 5 1 Momentum is clearly a vector quantity The following common experiences indicate the importance of this quantity for considering the effect of force on motion p mv Suppose a light weight vehicle say a small car and a heavy weight vehicle say a loaded truck are parked on a horizontal road We all know that a much greater force is needed to push the truck than the car to bring them to the same speed in same time Similarly a greater opposing force is needed to stop a heavy body than a light body in the same time if they are moving with the same speed If two stones one light and the other heavy are dropped from the top of a building a person on the ground will find it easier to catch the light stone than the heavy stone The mass of a body is thus an important parameter that determines the effect of force on its motion the mos Same Sper Speed is another important parameter tout heavy consider A bullet fired by a gun can easily pierce human tissue before it stops resulting in casualty The same bullet fired with moderate speed will not cause much damage Thus for a given mass the greater the speed the greater is the opposing force needed to stop the body in a certain time Taken together the product of mass and velocity that is momentum is evidently a relevant variable of motion The greater the change in the momentum in a given time the greater is the force that needs to be applied A seasoned cricketer catches a cricket ball coming in with great speed far more easily than a novice who can hurt his hands in the Ono raggon in that the cricketer allows a both Stone tene sequire force to stopte a light stone
![If the four forces as shown are in equilib press F F in unit vector form F 15 N 37 30 30 10 N](https://media.kunduz.com/media/sug-question-candidate/20200714034944330271-1877175.jpg?w=256)
Physics
Unit & DimensionsIf the four forces as shown are in equilib press F F in unit vector form F 15 N 37 30 30 10 N