Physics question and answers for May 23, 2024
- Q 813 The centre of mass of a non uniform rod of length 4 whose mass per unit length is K 3x kg m where x is in m The distance...
- Q 4 55 A metre stick of length and mass M is placed on a frictionless horizontal table A hockey ball of mass m sliding along the table perpendicular to the...
- Q The moment of inertia of the two uniform joint rods about axis passing through P and perpendicular to plane is 1 Me 3 3Me M M l M l I...
- Q A cylinder of mass M and raidus R moves with constant speed v through a region of space that contains dust particles of mass m which is at rest There...
- Q c 5v0 2 oR d 2V0 51 The radius of gyration of a solid hemisphere of mass M and radius R about an axis parallel to the diameter at a...
- Q c R r t 49 A right triangular plate ABC of mass m is free to rotate in the vertical plane about a fixed horizontal axis through A It is...
- Q COMPREHEN A massless elastic cord that obeys Hooke s law will break if the tension in the cord exceeds Tmax One end of the cord is attached to a fixed...
- Q A proton of mass m collides with a heavy particle 4 at rest After collision proton bounces back with 9 of its initial kinetic energy Collision is perfectly elastic Find...
- Q Fixed 16 Two particles of equal mass have velocities v 2 1 m s and v 23 m s First particle has an a 31 31 m s acceleration while...
- Q 6 A particle of mass m moves with speed u and collides head on with a stationary particle of mass m The first particle continues to move in the same...
- Q ners of s of each ystem is 3 Two blocks A and B of mass mand 2 m are connected by a massless spring of force constant k They are...
- Q 14 Initially two stable particles x and y start moving 1 towards each other under mutual attraction If at one time the velocities of x and y are V and...
- Q 10 A ball of mass 4 kg strikes another 10 4 kg stationary ball of mass 2 kg with velocity Qua Beer Fot 600 83 10 ms Assuming perfectly elastic...
- Q 1 As shown in the figure a body of mass m moving vertically with speed 3 m s hits a smooth fixed inclined plane and rebounds with a velocity vf...
- Q 2 A hemisphere of radius R and of mass 4 m is free to slide with its base on a smooth horizontal table A particle of mass m is placed...
- Q 1 A ship of 5600 tonnes displacement is floating upright A weight of 30 tonnes is lifted from the port side of No 2 tween deck to the starboard side...
- Q lar as d e 8 A small block of superdense material has a mass M 3 where M is the mass of earth It is released from rest from a...
- Q A 7 A gun fires a bullet as shown in figure The barrel of the gun is inclined at an angle of 45 with horizontal When the bullet leaves the...
- Q A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg The velocity of 18 kg mass is 6 m s The...
- Q 4 A ball of mass m approaches a wall of mass M m with speed 4 m s along the normal to the wall The speed of wall is 1...
- Q Two masses move towards each other as shown in figure They collide and stick together How much energy is converted to heat Assume energy loss is completely converted in to...
- Q 38 A non conducting sphere of radius R and uniformly distributed charge Q is fixed in a gravity free space and a particle having charge q is projected with a...
- Q The centre of mass of a non uniform rod of length 4 m whose mass per unit length is K 3 kg m where x is in m The distance...
- Q an ideal monatomic gas around the cycle ABCA as shown in the diagram The process BC is adiabatic Call the processes AB BC and CA as 1 2 and 3...
- Q A wedge of mass m with triangular cross section AB CB CA 2R is moving with a constant velocity Vi towards a sphere of radius R fixed on a smooth...
- Q rigid massless rod of length 3 has two masses attached at each end as shown in the figure The rod is pivoted at pint p on the horizontal axis see...
- Q d v 24 A molecule of mass m moving at a velocity v elastically impinges on the wall at an angle a with the wall then a the impulsive reaction...
- Q 8 Two billiard balls each of mass 50 g moving in opposite directions with a speed of 40 km h collide and rebound with the same velocity What will be...
- Q 28 The dimensional formula of farad ohm is 1 MOLOTOA 2 MOLTO 3 MOLOTA 4 MOLTA 29 The value of R in the given circuit is R 822 1 29...
- Q Three particles A B and C start moving simultaneously with constant velocities from three places The starting places are collinear and that of B is somewhere in between those of...
- Q 10 A ball of mass m 1kg is hung vertically by a thread of length 1 1 50m Upper end of the thread is attached to the ceiling of a...
- Q 1 5 A vertically oriented uniform rod of mass M and length I can rotate about its upper end A horizontally flying bullet of mass m strikes the lower end...
- Q A long slender rod of mass 2kg and length 4m is placed on a smooth horizontal table Two particles of masses 2kg and 1kg strike the rod simultaneously and stick...
- Q The Marking scheme to evaluate the Answer to each question Full Marks 4 If the answer is correct Partial Marks 3 If all the four options are correct but only...
- Q inextensible strings which are just taut connect AB and BC and ZABC is 135 An impulse J is imparted to the particle C in the direction BC Mass of each...
- Q Ex 8 The masses of 5 balls at rest in a straight line form a GP where common ratio is 2 and their coefficient of restitution are each 2 3...
- Q A bottle of dry ammonia and a bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends the white ammonium chloride ring first formed...
- Q 1 2 6 x 10 ms 2 6 2 10 ms 3 10 x 10 ms 4 10 ms 22 An object is projected with a speed 10 ms at...
- Q A cricket ball of mass 100 g has initial velocity 37 4 m s and final velocity v 37 4 m s after being hit by the bat The magnitude...
- Q a pv pg h y b pg h y pv c pg h y pv d pg h y pv shell of mass m in flight explodes into three equal...
- Q 30 A solid cylinder of mass 20kg has length 1 mand radius 0 2 m Then its moment of inertia in kg m about its geometrical axis is 1 0...
- Q The moment of inertia of a thin uniform rod of length L and mass M about an axis passing mrough a point at a distance of 1 3 from one...
- Q A cylinder of mass m and radius R is rolling without slipping on a horizontal surface with angular velocity 0 The velocity of centre of mass of cylinder is R...
- Q 3 A uniform rod of length 1 0 metre is bent at its midpoint to make 90 angle The distance of the centre of mass from the centre of the...
- Q 4A uniform equilateral triangular lamina of side 1 has a mass m Its moment of inertia about the axis through the centroid and perpendicular to its plane is 72 a...
- Q A freight car of mass M contains a mass of sand m At t 0 a constant horizontal force F is applied in the direction of rolling and at the...
- Q 50 b The tangent to A c A line d None of the above perpendicular to the plane of rotation B A B Initially After Take a bicycle rim and...
- Q 16 Two identical blocks A and B each of mass m resting on the smooth horizontal floor are connected by a light spring of natural length L and spring constant...
- Q 13 Figure 9 27 shows a uni form square plate of edge length 6d 6 0 m from which a square piece of edge length 2d has been removed What...
- Q 40 Three bricks each of length L and mass M are arranged as shown in figure The distance of the centre of mass of a system from the wall is...
- Q ntal surface the x axis cm s and f its center face nt A C 2g sin 0 3r 36 With reference to figure of a cube of edge a...
- Q A ball of mass m 1 kg is released on an incline plane of length and inclination 8 It hits a rigid A board elastically which is fixed at a...
- Q Two blocks of masses 1 kg and 3 kg are moving with velocities 2 m s and 1m s respectively as shown If the spring constant is 75 N m...
- Q An inextensible string connects two masses m and 4m and the system rests on a smooth horizontal floor An impulse J is imparted to B as shown in figure The...
- Q A block of mass m is connected to another block of mass Mby a massless spring of spring constant k The blocks are kept on a smooth horizontal plane and...
- Q Sphere A of mass m moving with a constant velocity u hits another stationary sphere B of the same mass If e is the coefficient of restitution then ratio of...
- Q 10 A circuit has section AB as shown in figure If the charge on each capacitor is 10 C then potential difference V VB is A A 1 5 V...
- Q Q29 Two balls of equal masses have a head on collision with speed 6 ms each If the coefficient of restitution is 1 3 the speed of each ball after...
- Q Seven homogeneous bricks each of length L mass M are arranged as shown Projection L X then x co ordinate of C M is 10 X X X X i...
- Q A body is dropped from rest from height of h 5 0 m After rebounding twice from a horizontal floor to wha height will it rise if coefficient of restitution...
- Q Que 12 A circular disc of radius R is removed from a bigger circular disc of radius 2R such that the circumference of the discs coincide The centre of mass...
- Q placed in touch The distance of the centre of mass of the system from the centre of sphere A is 3 3a 4 None of these 1 a 2 2a...
- Q Que 5 Two particles A and B initially at rest move towards each other under a mutual force of attraction The speed of centre of mass at the instant when...
- Q A rod of length 3 m has its mass per unit length directly proportional to distance from one of its ends then its centre of gravity from that end will...
- Q 41 A ball is dropped on the floor from a height of 10 m It rebounds to a height of 2 5 m If the ball is in contact with...
- Q A spherical hollow cavity is made in a lead sphere of radius R such that its surface touches the outside surface of lead sphere and passes through the centre What...
- Q Find the position of centre of mass of the quarter solid sphere from C in which where r is radial distance unit volume is given as p r Po 1...
- Q 3 Assertion It is better to wash the clothes in cold soap solution Reason The surface tension of cold solution is more than the surface tension of hot solution
- Q A particle of mass m is initially at rest at the origin It is subjected to a force and starts moving along the X axis Its kinetic energy K changes...
- Q 4 The workdone on the system must be zero A rigid rod of mass 3m and length I is under translational motion on a smooth horizontal surface If the rod...
- Q and length is under A rigid rod of mass translational motion on a smooth horizontal surface If the rod collides inelastically with a fixed hinged O as shown in the...
- Q 14 In a resonance tube the first resonance with a tuning fork occurs at 16 cm and second at 49 cm If the velocity of sound is 330 m s...
- Q A hemispherical surface of mass M is placed on smooth horizontal floor A man of mass m starts moving on the surface from position A with constant speed v relative...
- Q Two identical metal balls connected at the ends of a light spring of force constant k form a dumbbell like structure The dumbbell rests on a frictionless horizontal floor and...
- Q A thin uniform flat plate is in shape of L as shown The mass of lamina is 3 kg The position of centre of mass from point O y 0...
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