Physics question and answers for September 17, 2024
- Q sometimes more than A bar magnet is made to fall through a long vertic copper tube The speed v of the magnet as function of time t is best represented...
- Q 2 Two concentric metallic spherical shells are given equal amount of positive charges Then a the outer sphere is always at a higher potential b the inner sphere is always...
- Q An electric dipole has a fixed dipole moment p which makes angle with respect to X axis When subjected to an electric field E E it experiences a torque T...
- Q A ball is thrown vertically upwards with a speed of 10 ms 1 from the top of a 200 m high tower and another is thrown downward with same speed...
- Q 29 Find the acceleration of the cylinder of mass m and radius R and that of plank of mass M placed on smooth surface if pulled with a force F...
- Q A block of mass 5kg is moving horizontally at a speed of 1 5 m s A perpendicular force of 5 N acts on it for 4 sec What will...
- Q 5 AL The group velocity of the de Broglie wave packet associated with a particle moving with velocity v is 1 equal to v 2 less than v 3 greater...
- Q KOTA RAJASTHAN 170 In YDSE with two identical slits when upper slit is covered with a transparent sheet of mica second order minima is observed above the centre of the...
- Q 5 63 A straight thin uniform rod of length 4L and man 4M is bent into a square Its M I about one side is 1 5ML 2 7 ML...
- Q 5 A 13 kg block is initially moving to the right with a speed of 15 m s at the instant shown At the instant shown two forces are also...
- Q 169 Find the torque about the origin when a force of 31 N acts on a particle whose position vector is C for 2km 2 3 4 61 Nm 6...
- Q If a current is passed through a circular loop of radius R then magnetic flux through a coplanar square loop of side as shown in the figure l R is...
- Q direction An artificial satellite is moving in a circular orbit of radius 42250 km Calculate its speed if it takes 24 hours to revolve around the earth 845
- Q Example 8 22 A man of mass m is standing on a platform mass m kept on a smooth horizontal surface The man star moving on the platform with a...
- Q Carbon silicon and germanium atoms have four valence electrons each Their valence and conduction bands are separated by energy band gaps represented by Eg c Eg si and Eg Ge...
- Q 72 In the following circuit if V A B value of resistance X in ohms will be 1 5 2 10 3 15 4 20 OA www 100 2 V...
- Q Choose the incorrect statement about areal velocity 1 Direction of areal velocity is perpendicular to velocity and in the direction of radius vector 2 Direction of areal velocity is perpendicular...
- Q Illustration 27 A galvanometer has a resistance of 30 22 and a current of 2 mA is needed to give a full scale deflection What is the resistance needed and...
- Q 3 The displacement x of a particle varies with time t as x ae at be t where a b a and are positive constants The velocity of the particle...
- Q A weightless ladder 20 ft long rests against a frictionless wall at an angle of 60 with the horizontal A 150 pound man is 4 ft from the top of...
- Q A man of mass 50 kg carries a bag of weight 40 N on his shoulder The force with which the floor pushes up his feet will be 1 882...
- Q graph of B versus x abruptly 51 Sometimes we show an idealised magnetic field which is uniform in a given region and falls to zero One such field is represented...
- Q Calculate the molarity of NaOH in the solution prepared by dissolving its 4 g in enough water to form 250 mL of the solution
- Q A sphere of mass m is kept between two inclined walls as shown in the figure If the coefficient of friction between each wall and the sphere is zero then...
- Q Example 4 8 Figure 4 15 shows a long straight wire of a circular cross section radius a carrying steady current I The current I is uniformly distributed across this...
- Q The two pulley arrangements shown in the figure are identical The mass of the rope is negligible In a the mass m is lifted up by attaching a mass 2m...
- Q 10 The distance between the centres of the earth and the moon is 60 times the radius of the earth Calculate the centripetal acceleration of the moon Acceleration due to...
- Q 13 Volume of a substance at normal atmospheric pressure is 3500 10 6 m What will be its change in volume at the pressure of 25 standard atmosphere Given that...
- Q of the 23 The string the spring and the pulley shown in figure 12 E9 are light Find the time period of the mass m p k eeeeee m Figure...
- Q 3 A coin is placed on the horizontal surface of a rotating disc The distance of the coin from the axis is Im and coefficient of friction is 0 5...
- Q A ball is released from the top of a tower of height h metres It takes T sec to reach the ground Bot Instamos a 90x5 TOS 17h D m...
- Q Kinetic energy of the system city of centre of mass of two particles is v and the sum of the masses of two particles is m A will be equal...
- Q Given equation is related to 2 X y cos x cos 2 vt 2 1 Transverse progressive 2 Longitudinal progressive 3 Longitudinal stationary wa 4 Transverse stationary wave
- Q is rele and m m connected by a light spring of natural length is compressed completely and Two masses a quarter of the way tied by a string This system...
- Q The speed of a swimmer in still water is 20 m s The speed of river water is 10 m s and is flowing due east If he is standing...
- Q Two identical blocks each of mass m are shown in figure Force exerted by clamp on the pulley is 3 3 mg 4 3 3 mg 4 30 2 3...
- Q Two particles 1 and 2 are moving with velocities v 41 31 m s and v bi j m s respectively The position vectors of the particles at time t...
- Q B A A circus performer of weight W is walking along a high wire as shown Assume that wire is very tight Tension in the wire A is approximately W...
- Q 30 Two objects of masses m and 2m are connected by a massless string passing over a fixed smooth pulley The acceleration of heavier mass w r t the lighter...
- Q Circuit shown is in steady state now when switch is closed galvanometer shows no deflection then correct relation is 1 R C R C 21D C R wwww C C...
- Q ass X Three boys A B and C are situated at the vertices of an equilateral triangle of side d at t 0 Each of the boy moves with constant...
- Q 7 An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A m 1 The permeability of the material of the rod is No 4 x...
- Q Wave has simple harmonic motion whose period is 4 seconds while another wave which also possesses simple harmonic motion has its period 3 sec If both are combined then the...
- Q The bob of a simple pendulum is replaced by a magnet The oscillation are set along the length of the magnet A copper coil is added so that one pole...
- Q Speed of a boat in standing water is 9kmph and the speed of the stream is 1 5kmph A man rows to a place at a distance of 105km and...
- Q a 4 b 3 c 2 d 2 Consider a long straight wire of cross sectional area A carrying a current i Let there be n free electrons per unit...
- Q Two wheels having radii in the ratio 1 3 are connected by a common belt If the smaller wheel is accelerated from rest at a rate 1 5 rad s...
- Q 5 In the circuit shown in figure find the amount of heat generated when switch s is closed SV SON
- Q Which one of the following represents a wave a y A sin oot kx b y A cos at bx c c y A sin kx d y A sin...
- Q The diagram shows a solenoid carrying time varying current I It I is constant On the axis of this solenoid a conducting ring is being placed as shown in figure...
- Q wo sound waves emitted by one sound source is approaching at a point through two path When path difference 3 36 cm or 60 cm then points are silence point...
- Q 7 Electric current is passing through a solid conductor PQ from P to Q The electric current densities at P and Q are in the ratio Le 2 2 1...
- Q A current carrying wire AB with current i is placed as shown in figure Find the magnetic field at origin 6 YA 1 0 01 Molo T 3 0 49...
- Q 7 Two balls one of mass m and other of mass 2 m are moving towards each other with respective speeds of 10 m s and 20 m s on...
- Q of earth s magnetic A 255 m wide spaceship moves through the space at a speed 4 5 x 10 m s A magnetic field B 8 x 105T exists...
- Q 4 on The ratio of acceleration of pulley to the acceleration of the block is string is inextensible m F A 0 5 B 2 C 1 Find the velocity...
- Q 12 Two conducting spheres of radii R and R are kept widely separated from each other What are their individual capacitances If the spheres are connected by a metal wire...
- Q 8 An airplane pilot wants to fly from city A to city B which is 1000 km due north of city A The speed of the plane in still air...
- Q Light of wavelength 2 x 10 m falls on a slit of width 4 x 10 m The angular dispersion of central maximum will be a 30 b 60 c...
- Q In a screw gauge the graduation in the circular scale consists of 100 equal divisions and 10 complete rotation of the cap is equivalent to 5 mm on the main...
- Q 23 What will be the value of maximum accelera of the truck in the forward direction so that the t kept on the back does not topple 1 ag h...
- Q COMPREHENSION VIII A thin circular ring of mass m radius R has a uniformly distributed charge Q The ring is placed on a rough horizontal floor The coefficient of friction...
- Q At what height above earth s surface value of g is same as in a mine 100 km deep 292691096 begge 24 01 Corp Reg Office CG Tower A 46...
- Q 3 2 i 3j 5k 3 From the top of a tower of height 100m a 10 gm block is dropped freely and a 6gm bullet is fired vertically upwards...
- Q A constant force F 20 N acts on a block of mass 2 kg which is connected to two blocks of mas m 1 0 kg and m 2 kg...
- Q A thin wire is bent in the form of a semicircle of radius 1 m as shown in the figure If carries a total charge of 16 2 coul uniformly...
- Q A man travelling in car with a maximum constant speed of 20 m s watches the friend start off at a distance 100 m ahead on a motor cycle with...
- Q 1 A photoelectron is moving with a maximum velocity of 106 m s Given e 1 6 x 10 9 c and m 9 1 x 10 1 kg the...
- Q In the given where a 1 NC hypothetical closed surface is taken as shown in figure y 0 0 0 b Ey Eof Ex d x i X The total...
- Q The acceleration due to gravity on a planet A is 9 times the acceleration due to gravity on planet B A man jumps to a height of 2 m on...
- Q An airplane pilot wants to fly from city A to city B which is 1000 km due north of city A The speed of the plane in still air is...
- Q Electrostatics has Statement 1 and Statement 2 Of the four choices given after the statements choose the one that best describes the two statements An insulating solid sphere of radius...
- Q 27 In the circuit shown the ratio 1 1 is equal to 1 1 1 2 2 1 3 4 3 3 4 3 4 2 5 5 V 10...
- Q Is it possible a Yes b No c Cannot be predicted d Insufficient data to reply 10 A D 15 A 5 A
- Q 46 ww W ww E r you R If E 6V r 20 then maximum power dissipa through R is 1 18 W 2 9 W 3 36 W 4...
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