Physics question and answers for July 07, 2024
- Q A 4 pole d c generator has a wave wound armature with 792 conductors The flux per pole is0 0121 Wb Determine the speed at which it should be run...
- Q An ocean going vessel uses sonar to measure the depth of the ocean If a sound wave sent from the ship bounces off the ocean floor 525 0 m below...
- Q A proton moving with a constant velocity passes through a region without change in its velocity If E and B represent electric and magnetic field respectively Then this region of...
- Q A mass m moves with a velocity v and collides inelastically with another identical mass After collision the 1st mass moves with velocity v 3 in a direction perpendicular to...
- Q A particle moves along a straight line x At time t 0 its position is at x 0 The velocity V of the object changes as a function of time...
- Q A train is moving at a constant speed along a straight level track Then a the frictional force is zero b the resultant of all the forces acting on the...
- Q U A long solenoid carrying a current I is placed with its axis vertical as shown in the figure A particle of mass m and charge q is released from...
- Q The position x of a particle w r t time t along x axis is given by x 9t t where x is in metre and t in second Find...
- Q A boy of mass 20 kg is standing on a 80 kg free to move long cart There is negligible friction between cart and ground Initially the body is standing...
- Q Two balls a and b having momentum 10kg m s and 17kg m s respectively are moving towards each other along straight line assu ming there is no external force...
- Q A proton of mass m and charge e is moving in a circular orbit in a magnetic field with kinetic energy 1 MeV The energy of a particle so that...
- Q A positively charged particle P crosses a region of uniform electric fie of intensity E Velocity u of the particle at the entry on the left side the region is...
- Q 5 The wavelength of photon of energy E is same as moving with the 7 5 107 ms and kinetic energy the de Broglie wavelength of a material particle E...
- Q 20 In potentiometer wire of length L and resistance 10 2 is connected in series with a battery of emf 2 5 V and a resistance in its primary circuit...
- Q Two identical particles P and Q of rest mass m are moving with velocities 5c 2c and 19 5 in directions x and r respectively in the lab frame Calculate...
- Q According to the Bohr model the energy levels of a hydrogen atom can be found by making two assumptions i The electrons move in a circular orbit and ii The...
- Q 2 A shell projected horizontally with a velocity of 165 m s from the top of a 15 m high wall explodes into two identical fragments in the air One...
- Q 2016 2017 2 A particle having charge equal to proton and mass 12 10 21 g is thrown parallel to plates as shown in the figure Value of electric field...
- Q 21 The flux of electric field through the circular region of radius r as shown in the figure is 1 2 to r 0 2 Zero 2 r C m
- Q A row of blocks are lined up with masses of 1 94 kg 2 14 kg and 3 71 kg The masses are then pushed forward by a 11 5...
- Q All capacitors were initially uncharged 10 F 1502 1002 www 50V 1502 S F HE A Battery current just after closing of switch S is 3 42 A B Battery...
- Q 1 Equipotential surfaces associated with an electric field which is increasing in magnitude along x direction are 1 Planes parallel to x z plane 2 Coaxial cylinders of increasing radii...
- Q equivalent of 16 F with breakdown voltage of 1000 V how many minimum number of capacitance marked 8 F 250 V are required 1 16 2 32 3 2
- Q Various Spectral Lines From a H Like Atom A gas of hydrogen like atoms has some atoms in lowest energy level A and some atoms in a particular energy level...
- Q Two boats were going down stream with different velocities When one overtook the other a plastic ball was dropped from one of the boats Some time later both boats turned...
- Q 26 A current loop consists of two identical semicircula parts each of radius R one lying in the x y plane and the other in x z plane If the...
- Q Seven identical circular planar disks each of mass M and radius R are welded symmetrically as shown The moment of inertia of the arrangement about the axis normal to the...
- Q An electromagnetic wave going through vacuum is described by E E sin kx oot B B sin kx cot Then 1 E B ok 3 Ek B00 E 2 B...
- Q A block is suspended by an ideal spring of the force constant K If the block is pulled down by applying a constant force F and if maximum displacement of...
- Q 9 A coil in the shape of an equilateral triangle of side is suspended between the pole pieces of a permanent magnet such that B is in plane of the...
- Q An observer can see through a small hole on the side of a jar radius 15 cm at a point at height of 15 cm from the bottom see figure...
- Q Consider the cube shown A point charge 8q is placed at a vertex G of the cube and another charge 4q is placed at the centre of an edge AE...
- Q A square loop ABCD carrying a current i is placed near and coplanar with a long straight conductor XY carrying a current I the net force on the loop will...
- Q dashed line A rigid square loop of side length 1 carrying an electric current is held motionless on a frictionless horizontal tabletop A uniform magnetic field pointing upwards is switched...
- Q 4 Planes parallel to x y plane 42 An electric dipole is kept in the field of a point charge Q as shown in figure If dipole is at origin...
- Q 3 The force required to produce an acceleration of 2 m s on a mass of 2 kg is a 4 N b 10 N c 22 N d 18...
- Q In a vernier callipers with no zero error 7th division of main scale coincides with 10th division of vernier scale when nothing is kept between the calipers Take 1 MSD...
- Q Q 21 A current carrying closed loop in the form of a right angle isosceles triangle ABC is place in a uniform magnetic field acting along AB If the magnetic...
- Q rv A particle is projected at an angle 60 with horizontal with speed 10 m s The time after which the s 1 of the particle remains times of its...
- Q 3 4 Q 34 Four cells of emf and internal resistance as shown are connected in parallel The equivalent cell between A and B will have internal resistance and emf...
- Q 4X A straight conductor carrying current i splits into two parts as shown in the figure The radius of the circular loop is R The total magnetic field at the...
- Q 45 A point charge q is kept inside an electrically neutral estion the potential at point P would be estionpa ell with its outer surface spherical in shape then q...
- Q 2 A particle of mass m is fixed to a string of l The particle is given a horizontal velocity of 5gl at the lowermost position Calculate the net acceleration...
- Q 8 Two circular coils 1 and 2 are made from the same wire but the radius of the 1st coil is twice that of the 2nd coil What is the...
- Q 5 Figure shows two conducting thin concentric shells of radius r and 3r The outer shell carries charge q Inner shell is neutral The charge that flows from inner shell...
- Q Q No 19 If magnitude of dispersive power of two lens are 0 024 and 0 036 then focal length be for aberration free combination 1 2 3 30 cm...
- Q A circular coil is in y z plane with centre at origin The coil is carrying a constant current Assuming direction of magnetic field at x 25 cm to be...
- Q A 101 2 kg person sits on a 4 0 kg bicycle The total weight is borne equally by the two wheels of the bicycle The tires are 0 013...
- Q 3 Problem 8 The force F 6 28 N i 4 15 N j acts on a particle as it moves along a straight line from Cartesian coordinate 0 75...
- Q 4 In the determination of Young s modulus by using Searle s method a wire of length L 2 m and diameter d 0 5 mm is used For a...
- Q 3 Eo V 4 91 92 93 80 27 small drops of same size are charged to V vo each If they coalesce to form a single large dro then...
- Q 19 Four similar point charges q are located at t vertices of a regular tetrahedron of edge length a T interaction energy of the system of charges is 3q 1...
- Q When a proton is released from rest in a room it starts with an initial acceleration ao towards west When it is projected towards north with a speed v it...
- Q w 7 A charge q is uniformly distributed over a quarter circular ring of radius r The magnitude of electric field strength at the centre of the ring will be...
- Q 0 Two equal electric currents are flowing perpendicular to each other as shown in the figure AB and CD are perpendicular to each other and symmetrically placed with respect to...
- Q B A cylindrical conductor of radius R is carrying a constant current The plot of the magnitude of the magnetic field B with the distance d from the centre of...
- Q Q 11 The potential energy of a system increases if work is doneyu Option A Upon the system by a conservative force Option B Option C Upon the system by...
- Q For the magnetic field to be maximum due to a small element of current carrying conductor at a point the angle between the element and the line joining the element...
- Q 6 Consider a disc rotating in the horizontal plane with a constant angular speed about its centre O The disc has a shaded region on one side of the diameter...
- Q The displacement of a particle in SHM varies according to the relation x 4 cos t sinnt The amplitude of the particle is Question Type Single Correct Type 1 2...
- Q 5 In the circuit shown choose the correct option All batteries are ideal 10 V 4 V 392 1 Power dissipated in 3 2 resistance is 12 W 2 Current...
- Q 26 A charge Q is placed on middle of edge of the cuber Then electric flux through cube due to field of charge Q is Q 1 BEO to Q...
- Q An object is placed 8 cm away from a mirror with focal length 12 cm Which of the following statements i corre O The image is virtual and on the...
- Q View In English A composite rod comprising two rods of mass m and 2m and each of length I 1 m as shown in the figure Assume w 10 rad...
- Q There exists a magnetic field in a cylindrical region of radius R The magnetic field is increasing at a constant rate a with respect to time The magnitude of induced...
- Q 13 Four point charges are placed on vertices of a square If all the charges are brought to any one of the vertices The change in potential at the centre...
- Q 2 A1 Infinitely long hollow conducting cylinder with inner radius R 2 and outer radius R carries a uriform current density along its length The magnitude of the magnetic field...
- Q View In English A particle describes a horizontal circle in a conical funnel whose inner surface is smooth with speed of 0 5 m s What is the height of...
- Q The diameter of a brass metal bob is fo und to be as 1 92cm The mass of the Bob is measured to be 29 150g The de nsity of...
- Q Q No 20 View In English Assuming human pupil to have a radius of 0 25cm and a comfortable viewing distance of 25cm the minimum separation between two objects that...
- Q 89 A ball of mass m is dropped What is the formula for the impulse exerted on the ball from the instant it is dropped to an arbitrary time later...
- Q 3 Three equal impedances each having a resistance of 2502 and reactance of 400 an connected in star to a 400V 3 phase 50Hz system Calculate i the line curren...
- Q For the transistor circuit shown below if 100 voltage drop between emitter and base is 0 7 V then value of VCE will be 2 3 4 2V 5 V...
- Q 14 The displacement of a particle executing periodic motion is given as y 4 sin 1000f cos t This displacement equation may be considered as superposition of 1 Two waves...
- Q 9 Two large vertical and parallel metal plates having a separation of 1 cm are connected to a DC voltage source of potential difference X A proton is released at...
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