Physics question and answers for May 10, 2024
- Q A geostationary satellite is orbiting the earth at a height of 5R above that surface of the earth R being the radius of the earth The time period of another...
- Q 3 Three masses each equal to M are placed at the three corners of a square of side a The force of attraction on uni mass at the fourth corner...
- Q A distance of 1 0 meter separates the centers of two small charged spheres The spheres exert gravitational force Fg and electrostatic force Fe on each other If the distance...
- Q Acceleration due to gravity on moon is 1 of the acceleration due to gravity on earth If the ratio of densities of 6 Pe 5 Pm earth p and moon...
- Q uestion No 9 Three solid spheres each of mass m and radius R are released from the position shown in fig The speed of any one sphere at the time...
- Q special theory of relativity was 1 2 3 The time period of any event in every frame of refrance will be the same Speed of light will be constant for...
- Q A ball is dropped Tro a sal lite revolving around the earth at a height of 120 km The ball will 1 Continue to move with same speed along a...
- Q 8 A body is projected vertically upwards from the surface of a planet of radius R with a velocity equal to half the escape velocity for that planet The maximum...
- Q The escape velocity from a planet is ve A tunnel is dug along a diameter of the planet and a small body is dropped into it at the surface When...
- Q A box weighs 196 N on a spring balance at the north pole Its weight recorded on the same balance if it is shifted to the equator is close to...
- Q It is Meech Lake all over but the talks are conducted on a hot air balloon that rises from rest with an acceleration of 1 1 m s due to...
- Q i For a low altitude orbit ifrrp where rp is planet radius show that for a given average planetary density the orbital period of satellite is independent of the size...
- Q Three equal masses of 3 kg each are fixed at the vertices of an equilateral triangle ABC The gravitational force acting on mass 2 kg placed at the centroid of...
- Q The force of gravitation between two mas is 10 mN in vacuum If both the masses are placed in a liquid at the same distance ther new force of gravitation...
- Q 6 23 Two satellites S and S revolve round a planet in coplanar circular orbits in the same sense Their periods of revolution are 1 hour and 8 hour respectively...
- Q in a direction making vi A particle is projected from point A that is at a distance 4R from the centre of the Earth with speed v 30 with the...
- Q 6 48 A hole is drilled from the surface of earth to its centre A particle is dropped from rest at the surface of earth The speed of the particle...
- Q iv Two small dense stars rotate about their common centre of mass as a binary system with the period 1 year for each One star is of double the mass...
- Q Two bodies of masses M and M2 are kept separated by a distance d The gravitational potential at a point where net gravitational field intensity by them is zero is...
- Q An earth of mass orbits along along a circular orbit C at a height 2R from earth s surface It is to be transferred to a circular orbit C of...
- Q S The acceleration due to earth s gravity on a point particle at a height h above the surface of th earth is denoted by g h and at a...
- Q 1 10 V 2 15 V 3 20 V 4 30 V How high a man be able to jump on the surface of a planet of radius 320 km...
- Q 6 A jet airplane travelling at the speed of 500 km h ejects its products of combustion at the speed of 1500 km h relative to the jet plane The...
- Q Assume that the Earth changes its shape and turns into an infinite cylinder whose radius and density are the same as those of our real Earth and the distance of...
- Q How much energy will be necessary for making a body of 500 kg escape from the earth g 9 8 m s radius of earth 6 4 x 106 m...
- Q I want to know why while applying co nservation of mechanical energy we have taken the potential energy of th e final state but not of the initial stat e...
- Q The relative uncertainty in the period of a satellite orbiting around the earth is 102 If the relative uncertainty in the radius of the orbit is negligible the relative uncertainty...
- Q estion No 21 comet travels around sun in elliptical orbit Its mass is 105 kg When it is 2 5 x 1010 m away its speed is 2 x 10...
- Q MO M A D GM D B GM 2D C v GM D D v MGD E D 2GM D Obta 20 Two identical stars a fixed distance D apart...
- Q A 70 kg astronaut is repairing spaceship at a height of 640 km above the surface of earth His weight at that location is nearly g 10 m s 460...
- Q Two bodies of masses M and M are kept separated by a distance d The gravitational potential at a point where net gravitational field intensity by them is zero is...
- Q 37 The acceleration due to gravity on the planet A is 9 times the acceleration due to gravity on planet B A man jumps to a height of 2 m...
- Q Figure shows a binary star system revolving about their COM The masses of star A B are 15 x 100 kg and 45 x 1030 kg respectively Find the ratio...
- Q 4 Friction is acting downward and static in nature 1 Two satellites are in the parking orbits around the earth Mass of one is 10 times that of the other...
- Q The density of a soud spherical planet of radius R is given as p pol where po constant and r is distance measured from centre of planet The acceleration due...
- Q Four point masses each of mass m are placed on vertices of a regular tetrahedron Distance between ar two masses is r A Gravitation field at centre is zero B...
- Q 26 Imagine a light planet revolving around a very massive star in a circular orbit of radius R with a period of revolution T If the gravitational force of attraction...
- Q joule second A metal plate is kept stationary and normally ina time varying magnetic field then 1 Both emf and current are induced in the mea plate 2 A current...
- Q 3 A solid sphere of mass M and radius R has a thin groove cut along the diameter as shown in the figure This rod of length 2R mass per...
- Q 45 In gravity free space a thin spherical shell of mass M and radius Ris held fixed There is a small hole in the shell A small mass m is...
- Q Three stars each of mass m rotate in a circle of radius r with uniform angular speed unde mutual gravitational attraction The angular speed of each star is A B...
- Q While discussing the variation of g or the ac celeration due to gravity for the variation of depth we are considering that the inner shel Is of the earth are...
- Q 29 If the angular velocity of a planet about its own axis is halved the distance of geostationary satellite of this planet from the centre of the planet will become...
- Q Example 17 An electron falls through a distance of 1 5 cm in a uniform electric field of value 2 x 104 N C When the direction of electric field...
- Q On to a sphere of radius R 2 and density p2 with centre at C a second solid sphere is moulded with density p radius R and centre C Find...
- Q 21 If the radius of the earth were increased by a factor of 2 keeping the mass constant by what factor would its density have to be changed to keep...
- Q 45 The gravitational potential of two homogeneous spherical shells A and B separated by large distance of same surface mass density at their respective centers are in the ratio 3...
- Q 50 A small section of area AA is removed from a uniform spherical shell with surface mass density o and radius R as shown in the figure Find the magnitude...
- Q te is moving around the earth with speed V in circular orbit of radius r If the orbital radius is decreased by 2 the speed of the satellite will 2...
- Q In one waterfall the water falls 300m Calculate the decrease in the gravitational potential energy g p e of 1 0kg of water as it falls through this distance decrease...
- Q 27 If G is the universal gravitational constant and the uniform density of a spherical planet Then shortest possible period of rotation around a planet can be p is a...
- Q 38 If radius of a solid sphere is decreased to half keeping density of sphere unchanged the slope of E r graph inside the sphere will a remain unchanged b...
- Q 7 Two point masses each of mass M are kept fixed at rest at points A and B respectively A third m is released from infinity with a negligible speed...
- Q 24 The diagram shows a barrel of weight 1 0 10 N on a frictionless slope inclined at 30 to the horizontal Force of slope on barrel Slope Force a...
- Q Consider two solid spherical asteroid of uniform density of mass M and radius R In one asteroid a tunnel of very small size of depth R is bored to the...
- Q 3 In space two point masses of mass 10 kg each are fixed The masses are separated by a distance 10 m Another point mass of mass 1 kg is...
- Q th options without selecting any incorrect option second option in this case will result in 2 marks Selecting only one of the three correct options either first or third or...
- Q A plumb bob of mass 2 kg is hung from the ceiling of a car If the car moves with an acceleration ao up the plane and the angle of...
- Q If the elevator in the shown figure is moving upwards with constant acceleration 1 m s the tension in the string connected to block A of mass 6 kg would...
- Q A balloon is ascending vertically with an acceleration of 0 2m s Two stones are dropped from it at an interval of 2 sec The distance in m between them...
- Q 2 The additional kinetic energy to be provided to a satellite of mass m revolving around a planet of mass M to transfer it from a circular orbit of radius...
- Q If one wants to remove all the mass of the earth to infinity in order to break it up completely The amount of energy that needs to be supplied will...
- Q A bob of mass 2m hangs by a string attached to the block of mass m of a spring block system The whole arrangement is in a state of equilibrium...
- Q A bob B of mass 1 kg is suspended from the ceiling and the side of a toy train as shown in the figure The train oscillates simple harmonically in...
- Q 8 An object weighs 60 N on Earth a Determine the mass of the object b Determine the weight of the object in pounds c Determine the weight of the...
- Q If R is the average radius of earth w is its angular velocity about its axis and g is the gravitational acceleration on the surface of earth then the cube...
- Q Q14 If a person with a spring balance and a body hanging from it goes up and up in an aeroplane the reading of the weight of the body as...
- Q A 494 kg uniform solid sphere has a radius of 0 392 m Find the magnitude of the gravitational force exerted by the sphere on a 50 1 g particle...
- Q A satellite of mass m initially at rest on the surface of earth is launched into a circular orbit at a height equal to the radius of the earth The...
- Q Three equal masses m placed at the corners of a equilateral triangle of side a then find net gravitational force on any one mass m O Gm a2 O Gm...
- Q If a particle of mass m is released from a height 3R above earth s surface then its kinetic energy when its reaches on earth s surface M is mass...
- Q 53 sphere of uniform density and 4 m Its centre is at the origin of the coordinate system Two spheres of radii 1 m are taken out so that their...
- Q The density of a nearly discovered planet is twice that of the earth The acceleration due to gravity at the surface of the planet is equal to that at the...
- Q 51 A solid sphere of uniform density and mass M has radius 4 m Its centre is at the origin of the coordinate system Two spheres of radii 1 m...
- Q A body attains a height equal to the radius of the earth when projected from earth surface The velocity of the body with which it was projected is Question Type...
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