Physics question and answers for May 19, 2024
- Q Eight solid uniform cubes of edge I are stacked to gether to form a single cube with centre O One cube is removed from this system Distance of the centre...
- Q Illustration 3 A dog of mass 10 kg boat so that it is 20 m from the shore It walks 8 m on the boat towards the shore and then...
- Q of mass m is floating in air by a jet of out of a nozzle If the water strikes the ping pong ball with a speed v and just after...
- Q in momentum F 1 3 of the following graphs the total change is zero 5 F 5 A 1 2 5 2 4 F LO 5 5 2 5 0...
- Q A bullet of mass m is fired from below into a bob of mass M of a long simple pendulum The bullet stays inside the bob and the bob rises...
- Q A disc of mass M and radius R is rolling without slipping with angular speed co on a horizontal plane as shown The magnitude of angular momentum of the disc...
- Q Suppose a ball of mass m is thrown vertically upward with an initial speed v its speed decreases continuously till it becomes zero Thereafter the ball begins to fall downward...
- Q Mass of bigger disc having radius 2R is M A disc of radius R is cut from bigger disc Moment of inertia of disc about an axis passing through periphery...
- Q ision the system imm A body of mass 8kg at rest expolded into 3 pieces of masses 1kg 2kg and 5kg The first two pieces off perpendicular with velocities in...
- Q Six rods of the same mass m and length are arranged as shown in figure Calculate the coordinate of the centre of mass of the system y YA 1 3...
- Q If momentum of an object is increased by 10 then its kinetic energy will increase by 1 20 2 21 4 19
- Q A uniform rod of mass m and length L is suspended with two massless strings as shown in the figure If the rod is at rest in a horizontal position...
- Q 11 A shell of mass 100 g moving with speed of 50 m s 3 1 along a straight line inclined at an angle tan to the horizontal bursts into...
- Q 45 A rigid ball of mass m strikes a rigid wall at 60 and gets reflected without loss of speed as shown in the figure The value of impulse imparted...
- Q The wavelength of light in two liquids x and y is 3500 and 7000 then the critical angle will be 4 15 1 60 2 45 3 30
- Q 15 A block of mass 1 kg is moving along a line X Y 5 at a speed 2 2 m s If x and y are in meter then...
- Q Man A of mass 60 kg pushes the other man B of mass 75 kg due to which man B starts moving with acceleration 3 m s The acceleration of...
- Q An object is projected with a speed 10 m s at an angle of 300 with the horizontal The object breaks down into n equal fragments during its motion One...
- Q 24 A particle of mass m strikes a wall with speed w at an angle 30 with the wall elastically as shown in the figure The magnitude of impulse imparte...
- Q A thin non conducting horizontal disc of mass m having total charge q distributed uniformly over its surface can rotate freely about its own axis Initially when the disc is...
- Q A particle of mass m charge Q and kinetic energy T enters a transverse uniform magnetic field of induction B After 3 seconds the kinetic energy of the particle will...
- Q A ball moving with a momentum of 15 kg ms 1 strikes against the wall at an angle of 30 and is reflected with the same momentum at the same...
- Q 48 The period of revolution of planet A around the sun is 8 times that of B The distance of A from the sun is how many times greater than...
- Q same thickness The peripheries of the two dis system taking center of large disc at origin A thin uniform sheet of metal of uniform thickness is cut into the shape...
- Q 25m A skier plans to ski a smooth fixed hemisphere of radius R He starts from rest from a curved smoo R 14 surface of height The angle 0 at...
- Q Mass A hits B inelastically e 0 while moving horizontally with some velocity along the common line of centres of the three equal masses each of same mass Initially mass...
- Q A frog sits on the end of a long board of length L 10 cm The board rests on a frictionless horizontal table The frog wants to jump to the...
- Q An insect of mass m is initially at rest at the one end of a stick of length L and mass M which rests on a smooth horizontal floor The...
- Q If the collision of a ball of mass m is inelastic then the relation between 0 and o is where e is the coefficient of restitution Jous m 1 tana...
- Q 7 A rigid square is made up of four identical light massless rods of length a and two light diagonal rods as shown in the figure Four small objects of...
- Q Consider the following two statements a Among a given set of axis for a rigid body the moment of inertia is always minimum about the one passing through the center...
- Q 9 A particle of mass m moving with horizontal speed 6 m s collides elastically with another particle of mass M m M moving in the same direction with speed...
- Q B The figure shows the positions and velocities of two particles If the particles move under the mutual attraction of each other then the position of centre of mass at...
- Q 1 A cubical block of side a moving with velocity v on a horizontal smooth the plane as shown in figure It hits a ridge at point O and starts...
- Q 13 A table with smooth horizontal surface is turning at an angular speed w about its axis A groove is made on the surface along a radius and a particle...
- Q 12 A ball of mass 1 kg is dropped from height 9 8 m strikes with ground and rebounds at height of 4 9 m if the time of contact...
- Q A uniform rod of length 4 m and mass 2 2 kg revolves with constant angular velocity o about a vertical axis through a smooth joint A at one extremity...
- Q It is found that if a neutron suffers an elastic collinear collision with deuterium at rest fractional loss of its energy is p while for its similar collision with carbon...
- Q on A ball of mass m hits a floor with a speed v making an angle of incidence 0 45 with the normal rivom to the floor If the coefficient...
- Q In a step up transformer the turn ratio is 1 2 If voltage across primary is 1 5 V then voltage developed in the secondary would be 1 3 0...
- Q A ball of mass m moving at a speed v makes a head on collision with an identical ball at rest The kinetic energy of the ball after the collision...
- Q 1 Determine the impedance seen by the source V 2420 V in the network shown in figure 202 11 0 ww ele 30 RO 4H ele 20
- Q 3 A body of 1000 kg moving with 0 3 m s in x direction A hole is present at the bottom of body such that mass is dropping at...
- Q Example 11 22 A ball of mass m moving at a speed v makes a head on inelastic collision with an identical ball at rest The kinetic energy of the...
- Q Three identical uniform spheres each of mass M and radius R are placed as shown in figure The moment of inertia of the system about the axis AB is A...
- Q 3 A solid sphere of radius R is placed on a smooth horizontal surface A horizontal force F is applied at height h from the lowest point For the maximum...
- Q at height of from its base 4R MOTION OF CENTRE OF MASS 1 Motion of Centre of Mass 2R As for a system of particles position of centre of mass...
- Q Find the ratio of magnitude of angular momentum of a rolling disc about origin to that about the point P on the disc as shown in the figure A 2...
- Q A wheel of mass 5 kg and radius 0 4 m is rolling on a road without sliding with angular velocity 10 rad s 1 The moment of inertia of...
- Q 1 Consider a gravity free hall in which a tray of mass M carrying a cubical block of ice of mass m and edge L is at rest in the...
- Q A diatomic molecule is formed by two atoms which may be treated as mass points m and m2 joined by a massless rod of length r Then the moment of...
- Q In which of the following cases the centre of mass of a rod may be at its centre 1 The linear mass density decreases continuously from left to right 2...
- Q 37 In a one dimensional collision between two identical particle A and B B is stationary and A has momentum P before impact During impact B gives an impulse J...
- Q 18 A uniform thin rod AB of length L has linear mass density x a 7 124 the CM of the rod lies at a distance of bx L L...
- Q At a place true dip is 45 and apparent dip is 60 If plane of dip circle is rotated by 90 then dip shown by it will be 1 30...
- Q dius r is joined to a uniform solid right circular cone of base radius r and height 3r If both have same density then find the position of centre of...
- Q B A circular platform is mounted on a frictionless vertical axle Its radius R 2m and its moment of inertia about the axle is 200 kg m It is initially...
- Q 12 The moment of inertia of a uniform circular disc is maximum about an axis perpendicular to the disc and passing through rbans 1 D 3 B B C A...
- Q A large number n of identical beads each of mass m and radius r are strung on a thin smooth rigid horizontal rod of length L L r and are...
- Q and U2 1 Two identical mas M moving with velocity u collide perfectly inelastically The loss in kinetic energy is M 1 x 4 4 2 M 4 3 X...
- Q 5 A mass m moves in a circle on a smooth horizontal plane with velocity vo at a radius Ro The mass is attached to a string which passes through...
- Q Consider the following two statements A Linear momentum of a system of particles is zero B Kinetic energy of a system of particles is zero Then 1 A does not...
- Q 0 In the figure shown ABC is a uniform wire If centre of mass of wire lies vertically below point A then AE is close to JEE Main Online 2016...
- Q A particle of mass m strikes elastically with a disc of same mass with speed v as shown in figure All the surface of contacts are smooth The velocity of...
- Q A solid sphere is rotating freely about its symmetry axis in free space The radius of the sphere i increased keeping its mass same Which of th following physical quantities...
- Q 7 Consider the following two statements a body may have momentum without energy b A body may have energy without momentum The correct statements among the following are 1 a...
- Q A railwagon moves at velocity v on a track toward three other railwagons at rest on the track All the wagons are identical and each stationary wagon is some distance...
- Q Three identical rods are hinged at point A as shown The angle made by rod AB with vertical is a tan tan Q 3 4 b tan c tan 1...
- Q Four particles A B C and D with masses mA m mB 2m mc 3m and mp 4m are at the corners of a square They have accelerations of equal...
- Q 1 All the particles of a body are situated at a distance R from the origin The distance of centre of mass of body from origin is 1 2R 3...
- Q 8 Pick three different trials that have a different mass ratio For each trial that you pick fill in the table below Trial A E H m m 0 5...
- Q On a smooth level surface a red marble of mass 0 02 kg moving at 2 0 m s collides with a stationary yellow marble of equal mass After the...
- Q A slab of concrete of length L 1 6 m is supported by rollers as shown in Figure 1 If the slab is pushed to the right it will move...
- Q Two balls of equal mass m undergo a collision One ball is initially stationary After the collision the velocities of the balls make angles of 25 5 and 45 9...
- Q spokes are massless and that F 1 N In order to impart identical angular accelerations how large must F be M 1 kg O 0 5 N 0 25 N...
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