Physics Questions

3 When a force F is applied to a mass m its acceleration is 6 m s If the same force is applied to another mass m it gives an acceleration 3 m s If the two masses are tied together and if the same force is applied to the combination it gives an acceleration 5 05 F50 m go or a stom 3 30 3 30 6 5 ed ory 55g boss 505 party wos 3 1 5 m s my go do 54 dos ad wos son 1 3 m s 2 2 m s no dom 4 1 m s2

46 Position time graph for a particle is shown in figure Starting from t 0 at what time t the average velocity is zero x m 10 9 8 6 5 3 2 1 1 1 s 2 3 s 3 6 s 4 7 s 1 2 3 4 5 6 7 8 9 10 11 12 13 s 1 t s X2Y V 2 B 1

A ball is dropped onto to horizontal surface from a height of 36cm After bouncing several times it comes to rest covering a total distance of 108cm measured in a vertical direction The percentage loss in kinetic energy after its first impact is 10x The value of x is

96 The vectors A B and C are such that A BLIC 21A and A B C 0 The angles between A and B Band C respectively are 3010 A B 0 C 3000 A B dg B C 1 90 135 4g Soo 2 90 45 A B C 2 A A B C 0 500m 3 45 135 4 45 90

100 A bullet is fired from a gun with a velocity 30 m s at an angle of 60 with the horizontal direction At the highest point of its path the bullet explodes into two parts with masses in the ratio 1 3 The lighter mass comes to rest immediately Then the speed of the heavier mass is a do 50 a 55 30 5 3 e 55rod 045 60 s abast tegods ar argodt nog 28 g was gow 1 3 551 Bodroom Des 30050 30s gos 30od 24jo pas saja tyds ads 55got sa

117 A nucleus disintegrates into two nuclear parts which have their velocities in the ratio 2 1 The ratio of their nuclear sizes will be EDAS Bodo Bodor Dos do 25 B00650 2 1 page 3 sove 1 23 1 So Sorare De 1 2 1 32 3 1 23 das 32 1

Figure shows two blocks A and B having mass 2 kg and 4 kg moving with a speed 4 m sec and 2 m sec respectively The maximum compression in the spring and final velocity of 2kg block are respectively 4m sec K 10 N m 2m s 00000000 1kg Question Type Single Correct Type 1 2 24 2kg m 45 3 m s 24 V25m 3 m s 24 3 45 4 3 m s Smooth

18 Two blocks of mass 1 kg and 2 kg respectively are connected by a spring and kept on a frictionless table The blocks are pulled apart so that the spring is stretched and released from rest At a certain instant of time the block of mass 1 kg is found to be moving at a speed 2 m s What must be the speed of the other block at this instant a 1 m s c 4 m s b 0 5 m s d 0 25 m s J K CET

During adiabatic expansion of 2 moles of a gas the change in internal energy was found to b equal to 100 J The work done during the process will be equal to i wodoo 100 arves 2 3rd e Jaws Soys Jy wo woddaw 3o vous dod 35 28hod Options Zero 1 Bo 2 200 J 3 100 J 100 T

120 Wggo e as od 50 550 od as 58s 500 550 5g esso de todos 9 10 Nm C po 506 58 3 108 ms Options 2x10 7 2 3x10 7 3 4 10 7 4 0 100 cm rdos mis Dex T

102 A solid sphere and a thin spherical shell of same radius rotate about their diameters with same angular momentum but with different angular velocities IfM and M are the mass of solid sphere and hollow sphere and if their angular velocities are in the ratio 1 2 then 2 og tons as to eat fogfee and g tio idom st das dag 3 2001 da no camin data dago M M cu n e dog esno digobo ard s dos de page 1 2 would sya M M Daje

3 A stone is dropped from the top of a tower of height 45 m One second later another stone is thrown down from the top of the same tower Both stones reach the ground at the same time If g 10 m s magnitude of the initial velocity of the second stone is 418 w growd 45 s Dey Jood 8008 300d s 55 dog 5 55 od 2 805 od 8008 050ards Bodo orday dowo Joross g 1055 s wond Bods row 0 3K 50rm 2 12 5 m s 1 25 m s 3 8 m s 16 mis

Two parallel metal plates A and B separated by a distance 25 cm are connected to an ammeter Photons of energy 3 28 eV are incident on the photosensitive plate A of threshold wavelength 5000 A The minimum value of the magnetic field to be applied parallel to the plates so that the current through the ammeter becomes zero is Bx10 5 T Then the value of B is mass of electron 9 0x10 31 kg charge of electron 1 6 10 19 C

The ratio of the fundamental frequencies of two identical strings after one of them was stretched by 2 and the other by 4 is Assume that the tension is proportional to the elongation Boned as a 2 58 Jose Day g du Options 25 25 26 51 od 0 4 5 t J r os 40o 508

150 V emf 550050 10 wodoodo ne as argos Bogo do 100 36550 gond das so 900 2 500 Ke as sy b 500 g ne Bro Jey bob rosdom Soso 35 100 2 5650 0560 do ro og Keo da Options 0 5 1 2 1 3 1 5

B ds 0 equation is not according to the following 3 B ds 0 35606 500 000 5 Options The net magnetic flux enclosed by any closed surface is zero Josje dood boas s o sor n tr p n No isolated magnetic poles are available De er odos The magnetic flux is positive at some place and it is negative at some other place as dos anys to resor o s Hoevo8 The number of magnetic lines leaving a surface is not equal to that of entering the surface 25 500 500 2006 go outyou wodper doo 5308 5 wodne Songs Sar o 50

3 Ground is g Both 2 3 The velocity v time 1 graph for a particle moving along x axis is shown in the figure The corresponding position x time f is best represented by 4 u h h h 4 1 3 2

Two longparallel wires carry currents I and I2 11 12 When the currents are in the same direction the magnetic field at a point midway between the wires is 10ur If the direction of 12 is reversed the field becomes 40 T The ratio 11 12 is 1 5 2 2 5 3 3 4 3 4 3 2

A man is carrying a block of certain material density 1000 kg m weighing 1 kg in his left hand and a bucket full of water weighing 10 kg in his right hand He drops the block in the bucket How much load does he carry in his right hand now as 31 kg aroo ne as ago 1000 kg m ne Sels Dodo aseutu sud 30 u ardo ud u de Jod word Options 1 9 kg 2 Bass 3 10 kg 11 kg 12 ka 306 10 kg do eve tas AP EAMCET 2020 AP EAMCET 2020 71 119

Choose the correct statement among the followings A In outer space the sky looks dark and black instead of blue B Danger signal lights are red in colour C The sun appears white when it is overhead in the sky D We can see the sun before the actual sunrise by about two minutes The correct option is O Only A and C Only B and C O Only B C and D All A B C and D

95 Three hodies A B and C are projected with the same initial speed with angles of projections 30 45 and 60 respectively The body bodies having maximum range C Sards you 30 30 45 0 0 60 5o 3473 is Jodowass nog gee sons 2 A 3 A and B A B 500 ro sa 1 B A 5300530 B 4 3400 4 C

A current carrying wire has the configuration as shown in the figure Two semi infinite straight sections each tangent to the same circle are connected by a circular arc of angle along the circumference of the circle with all sections lying in the same plane What must be in radians in order for B magnetic field to be zero at the centre of the circle R

There is a uniform electric field of strength 103 Vm along the Y axis A particle of mass 1 g and charge 106 C is projected into the field from the origin along the ve X axis with a velocity of 40 ms Then the magnitude of its velocity after 30 seconds will be neglect gravitation 10 Vm 35 x 2568 Doogee Y ego 3oad 305kj 1 t 558 106 C5 65 X go 866 40 ms o a 20 35 30 55e dobr 3x 3050 55 Options 1 40 ms 1 50 ms 1

Example 24 Monochromatic light is incident on a plane interface AB between two media of refractive indices n and n n2 n at an angle of incidence 0 as shown in fig 33 The angle 9 is MEDIUM I A D G MEDIUM III 13 MEDIUM II n E F B Fig 33 infinitesimally greater than the critical angle for the two media so that total internal reflection takes place Now if a transparent slab DEFG of uniform thickness and refractive index n is introduced on the interface as shown in figure show that for any value of n3 all light will ultimately be reflected back again into medium II Consider

Arrange the following optical media in increasing order for speed of light in them Air Glass Diamond Water Air Water Glass Diamond Diamond Water Glass Air Diamond Glass Water Air Air Glass Diamond Water

Board Competitive Exams A ball is dropped from an elevator moving upware ation a ding

1 cm go he jo god se o P 555 5 00 s A do 5 uge so novedo sor rgos 50 00 Q 2 s 5 B Dod550 565 AB 12 cm 55805 36oot Srbs Doom sero P 5805 Q 5505 D8 Bodige 56 y 500 P500 Q Soso cms odex A B C D 500 O ev as 500pp Kus Options 1 12 2 10 W 8 D P B

coaxial coils A and B as shown in figure The end planes of two coils facing the magnet due to induction will behave 4 Points Direction of motion J Q S N A B North pole in both the coils A and B South pole in both the coils A and B North pole in coil A and South pole in coil B South pole in coil A and North pole in coil B

equivalent resistance between A and B is 199286 60 Ke 2568 Ook ono dod Doen AB 50 ZAOB 45 A508050 Be 500g de 00 45 D B

A rod of mass m and length L 50 3m is hinged in plank of same mass m The plank is kept on a smooth horizontal surface and rod makes with the vertical The system is released from 0 0 Find the velocity in m s of plank when the rod makes 0 180 g 10 m s Find the value of v 2 m

their potential energies What is the kinetic energy of a body of mass 1 kg moving with a speed of 2 m s Is potential energy a vector or a scalar quantity 11 kept at heights of h and 2h respectively What will be the ratio of 1001

Across a long conductor 2A current is flowering At 10cm from it another 5cm long conductor carries 3A The values of B at short conductor and force on it in the multiple of 10 6 are 1 4T 6N 2 4T 0 6N 3 6N 0 4T 4 6N 6T

A wind powered generator converts wind energy into electric energy Assume that the generator converts a fixed fraction of the wind energy intercepted by its blades into electrical energy For wind speed v the electrical power output will be proportional to A B V v2

Zero Marks 0 In all other cases If a charged spherical conductor of radius 10 cm has potential V at a point distant 5 cm from its centre then the potential at a point 15 cm away from the centre is V a find a

1 Tick the correct option today times the Earth was very different from what it is t 1 In a modern b prehistoric 2 Early humans covered themselves with a towels b silk clothing c 3 Early humans scared wild animals away with the help of a stones b sticks 4 Growing crops meant that early humans could live a in a fixed place b in the trees c recent 5 As time passed early humans noticed that of animals skins c fire II Fill in the blanks 1 The period of time that comes after the invention of writing is called 2 Earlier early humans looked like 3 Early humans took shelter in under overhanging cliffs 4 The first crops grown by early humans were on c on the ground and walked on all fours and or grew from seeds

An electron moving in a uniform magnetic field 41 6j nk T experiences a force 21 3j 4k N Then the value of n is 41 6j nk T Ke D ia wodiyos dos K k nst no Jog p no n 21 3j 4k N so n Deus Options 2 5 1 2 6 5 3 4 5

In a car race two cars start with velocities u and u and travel along a straight line with accelerations at and Brespectively If both reach the finish line at the same time then range of the race is Options 1 50 de Bond pormo dh ao sodg finish line 30 d 2 2 B a u u a 1 1 B a 2 11 1 a 18 u u a 2 1 1 B a do 50 a 5000000 B gdares u u a

94 The position of a particle is given by F 3ti 412 Sk Then the magnitude of the velocity of the particle at t 2 sec is 25 50 50 800 24om asgea50 F 31 41 Sk 1 2 58 sm 34 505050 1 276 m s 2 246 m s 3 255 m s 4 265 m s

ook now to pro 6000 A songso he soon rhod Sp s n Dojo6 3x10 cm od Ke as odos os as bos bud sood Spode Sro 20 54 36ujo 5535 rdo c n58 ov to sogg 555 Xocoso 74 107 Options 1 1 25 2 1 33 3 1 4

Two blocks of mass 10 kg and 2 kg respectively are connected by an ideal string passing over a fixed smooth pulley as shown in figure A monkey of 8 kg started climbing the string with constant acceleration 2ms 2 with respect to string at t 0 Initially the monkey is 2 4 m from the pulley Find the time taken by the monkey to reach the pulley 1 2 4 m 1 sec monkey 8 kg 2 kg Question Type Single Correct Type 10kg

A 5 Kg slider moves along a smooth straight rod in a vertical plane Attached to it is a mass less spring k 100 N m unstretched length 2 m When the spring is in horizontal position the speed of the slider is given by v 4 m s When the spring becomes vertical it s speed v in m s is g 10 m s 3m

The path of a light ray inside a transparent slab of variable refractive index is y 4x A light ray travelling in air falls on the surface of the slab at an angle 30 as shown in the figure The refractive index of the slab at y 0 5 m is Kro 555 Keso no es todos B o mod War as 50 Bomo 0055308 y 0 5 m 5g 30 Options 1 1 33 21 5 3 1 46 1 28 0 5m os 500 500 y 4x 5 os ras 360m 30 So 0 0 Normal 30 500 Slab 76302 air mo

The figure shows two identical parallel plate capacitors connected to a battery with switch S closed The switch is now opened and the free space between the plates of the capacitors is filled with a dielectric of dielectric constant or relative permittivity 3 The ratio of the total electrostatic energy stored in both capacitors before and after the introduction of the dielectric is Then find the value of x S VI A C B C

Zero Marks 0 In all other cases 100 cells each of e m f 5V and internal resistance 12 are to be arranged so as to drive maximum current in a 25 resistance Each row is to contain equal number of cells The number of rows she de Langhe tradin

winter when the average temperature is 18 C The track consists of sections of 12 0 m placed on after the other How much gap in cm should be left between two such sections so that there is no compression during summer when the maximum temperature goes to 48 C Coefficient of linear expansion of iron 11 x 10 6 C Question Type Numerical Type

03 A heavy brass sphere is hung from a weightless inclastic cord and acts as a simple pendulum with its period of oscillation T The sphere is immersed in non viscus liquid of density 1 10 of the density of brass Then it will act as a simple pendulum of period mea es Jordb rds wo os ass as a T Serigs ross odforum 0500 SwoDads dood a od 1 10 50 5510 od og rosu dostum 5000 pen BA

DSE setup the pio prase un 9 both waves at point on the screen again the angular position 0 of point P on the screen is shown below Choose the INCORRECT statement 4 n 2 Answer A B C Your Attempt 8 Correct answer The separation between slits is 2 There are 4 minimas on the screen The first maxima above the centre is at 4 Rate this questic

A conducting square loop is placed in a magnetic field B with its plane perpendicular to the field The sides of the loop start shrinking at a constant rate o The induced emf in the loop at an instant when its side is a is LE T B so don sody o 5 aus denen a god sy woodoo be a smo 5g er osmons Dags Us 805

In hydrogen spectrum La line arises due to transition of electron from the orbit n 3 to the orbit n 2 In the spectrum of singly ionized helium there is a line having the same wavelength as that of the La line of hydrogen This is due to the transition of the electron from the orbit to 25 5gwoo Lap obsono 3085 Dobos Ke 30 s de Dojaos O sono dopo 55850 Options 1 n 3 n 2 2n 4 n 2 n 5 n 3 3 4 on 3558 5008 n 25558 Dogs Bosno sto es Lop dong dong50 n 6 n 4 558 5008

53 A RC series circuit of R 1502 and C 10 F connected to 20 volt DC supply for very long time Then capacitor is disconnected from circuit and connected to inductor of 10 mH Find amplitude of current 1 0 2 10 A 2 2 10 A