Physics question and answers for May 08, 2024
- Q The gravitational force of attraction between a uniform sphere of mass M and a uniform rod of length and mass m as shown in figure is GMm a r r...
- Q A solid sphere of uniform density and radius 4m is located with its centre at the origin O of coordinate system Two spheres of equal radius 1m with their centres...
- Q 18 A satellite is describing a circular orbit around a massive planet of radius R The altitude of the satellite above surface of planet is 3R and its speed Vo...
- Q A satellite is launched into circular orbit of radius Raround the earth while a second satellite is launched into an orbit of Radius 1 02R The percentage change in the...
- Q 7 Two solenoids acting as short bar magnets P and Q are arranged such that their centres are on the X axis and are separated by a large distance The...
- Q 9 At what depth below the surface of the earth the acceleration due to gravity will be i one half ii one fourth of the acceleration due to gravity at...
- Q An object of mass M is divided into two parts which are placed at distance d If gravitational force of attraction is maximum between parts then find the ratio of...
- Q 2 1 a Write the answers of the following questions 1 Complete the following block m1 m2 m1
- Q A geo eostationary 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...
- Q 9 Two spherical bodies of mass M and 5M and radii R and 2R are released in free space with initial separation between their centres equal to 12 R If...
- Q Two small balls of mass m each are suspended side by side by two equal threads of length L as shown in the figure If the distance between the upper...
- Q Two bodies with masses M and M are initially at rest and a distance R apart Then they move directly towards one another under the influence of their mutual gravitational...
- Q 5 The SI unit of electric field is 6 a newton coulomb b Volt meter The electric field required to c coulomb newton d both a and b
- Q 4 A 1500 kg satellite orbits the moon at an altitude of 2 3 10 m What is the period of the satellite R 174x10 m r 2 3x10 m...
- Q If M is the mass of earth and M is the mass of e m e moon M 81 M The potential energy of an object of mass m situated...
- Q Three point masses each of mass m rotate in a circle of radius r with constant angular velocity due to their mutual gravitational attraction If at any instant the masses...
- Q 20 At what height from the surface of earth the gravitation potential and the value of g are 5 4 x 107 J kg and 6 0 m s respectively...
- Q Two satellites of earth S and S are moving in the same orbit The mass of S is four times the mass of S Which one of the following statements...
- Q 1 The acceleration due to gravity at a height 1 km above the earth is the same as at a depth d below the surface of earth Then NEET 201
- Q The height at which the weight of a body becomes 1 16th its weight on the surface of earth radius R is 1 3R 3 5R 2 4R 4 15R
- Q Two identical solid uniform spheres each of radius R are kept touching each other Find how gravitational force of attraction between them depends on R 1 Far 1 3 Fa...
- Q The escape velocity for a planet is v A tunnel is dug along a diameter of the planet and a small body is dropped into it at the surface When...
- Q c 40 hours Two spherical bodies of mass M and 5M radii R 2R respectively are released in free space with initial separation between their centres equal to 12 R...
- Q As seen in figure two spheres of mass m and a third sphere of mass M form an equilateral triangle and a fourth sphere of mass m is at the...
- Q A space vehicle approaching a planet has a speed v when it is very far from the planet At that moment tangent of its trajectory would miss the centre of...
- Q 3 To measure the mass of a planet with the same radius as earth an astronaut drops an object from rest relative to the planet from an altitude of one...
- Q A projectile is fired vertically upwards from the surface the earth with a velocity Kve where ve is the escape velocity and k 1 If R is the radius of...
- Q e particles each of mass m are situated at the vertices of an equilateral triangle of side a The only forces acting on the particles are their mutual gravitational force...
- Q In earth sun system if sun starts to shrink then force on earth due to sun Assuming that mass of sun is constant 1 Decreases 2 Increases 3 Remains same...
- Q A spaceship is stationed on Mars How much energy must be expended on the spaceship to launch it out of the solar system Mass of the spaceship 1000 kg mass...
- Q 7 If the law of gravitation becomes an inverse cube law instead of being inverse square law then 1 Planets will continue to move in elliptical orbits bona to noitentnaondo...
- Q 13 India s Mangalyan was sent to the Mars by launching it into a transfer orbit EOM around the Sun It leaves the Earth at E and meets Mars at...
- Q Work done to bring 4 particles each having a mass of 0 1kg from infinity to the vertices of square of side 0 2m is B 1 8 x 10...
- Q P1 and The planets with radii R and R have densities P2 respectively Their atomospheric pressures are p and p2 respectively Therefore the ratio of masses of their atmospheres neglecting...
- Q A small satellite revolves around a heavy planet in a circular orbit At certain point in its orbit a sharp impulse acts on it and instantaneously increases its kinetic energy...
- Q A skylab of mass m kg is first lauched from the surface of the earth in a circular orbit of radius 2R from the centre of the earth and then...
- Q A solid sphere of uniform density and mass M has radius 4 m Its centre is at the origin of the uib coordinate system Two spheres of radii 1 m...
- Q The density of a solid sphere of r 2 R center If the gravitational field due to this sphere at a distance 4 R from its center is E and...
- Q 5 Suppose earth is a solid sphere of radius R made of a material of density P There is a spherical cavity inside earth whose centre is at B Distance...
- Q Q11 A geostationary satellite is at a height h above the surface of earth If earth radius is R R A The minimum colatitude on earth upto which the satellite...
- Q The ratio of the mass of the moon to that of the earth is 1 81 If the radius of the moon is assumed to be one fourth of that...
- Q A body is projected vertically upwards with a kinetic energy which is half of the minimum kinetic energy required to escape the earth s gravitational attraction Calculate the maximum height...
- Q A particle of mass M is situated at the centre a spherical shell of same mass and radius a Th gravitational potential at a point situated at distance from the...
- Q 1 Find The gravitational field in a region is given by E 31 41 Nkg out the work done in joule in displacing a particle by 1 m along the...
- Q around the arth such that its minimum and maximum distance from earth s surface are 800 km and 2400 km respectively Calculate velocity of satellite when its distance from earth...
- Q 16 The ratio of the distance of two planets from the sun is 1 2 The ratio of their periods of revolution is
- Q The orbital angular momentum of the earth with respect to the sun divided by the mass of the earth is 4 4 x 1015 m s 1 Determine the area...
- Q A rocket is launched from a pole of the Earth with velocity Vo where Vo is the orbital velocity of rotation near the surface of the Earth in such a...
- Q 1 Two objects of mass m and 4m are at rest at an infinite separation They move towards each other under mutu gravitational attraction If G is the universal gravitational...
- Q 1 Four particles A B C and D each of mass m are kept at the corners of a square of side L Now the particle D is taken to...
- Q If potential at the surface of earth is assigned zero value then potential at centre of earth will be Mass M Radius R 1 O 3 3GM 2R 2 4...
- Q Two stars each of one solar mass 2 x 1030 kg are approaching each other for a head on collision When they are 109 km apart their speeds are negligible...
- Q 4 At what altitude h above the earth s surface wa the acceleration due to gravity be one fourth o value at the earth s surface 1 h R 2...
- Q A frictionless tunnel is dug inside a uniform sphere as shown in the adjacent figure i A particle of mass m is to be projected from point P so that...
- Q 0 If R and Hare the horizontal range and maximum height attained by a projectile than its speed of projection is 1 2gR 3 2gH 4R gH 8H Rg 2...
- Q 1 The density of a newly discovered planet is twice that of earth The acceleration due to gravity at the surface of the planet is equal to that at the...
- Q 5 A body of weight 72 N moves from the surface of earth at a height half of the radius of earth then gravitational force exerted on it will be...
- Q A uniform rod of mass M and length is at a 10 The mola distance x from a point particle of mass m The acceleration of particle just after release...
- Q 6 A planet has mass equal to mass of the earth but radius one fourth of radius of the earth Then escape velocity at the surface of this planet will...
- Q Two bodies of equal masses are some distance apart If 20 of mass is transferred from teh first body to the second body the gravitational force between them 1 Increases...
- Q Assume that the earth is a uniform sphere of radius R If the acceleration due to gravity at a height h abov the earth s surface is g and at...
- Q 3 3 5 nm 4 zero A skylab of mass m kg is first launched from the surface of the earth in a circular orbit of radius 2R from the...
- Q 2 The figure shows a uniform slab of mass 7 kg What is its moment of inertia in kg cm about the axis normal to the plane of drawing and...
- Q G 1 S G 3 SG S G 19 1 AIPMT Pre 2012 17 A ring is made of a wire having a resistance Ro 12 2 Find the points...
- Q A planet of mass m moves in an elliptical or bit around an unknown star of mass M such that its maximum and minimum distances from the star are equal...
- Q a 18 The earth 82 J cm radiation rate of receives solar min Assuming that the sun radiates like a blackbody calculate the surface temperature of the sun The angle...
- Q 34 A satellite of mass m orbit round the earth at a distance of 2 5R above its surface If gravitational field strength at surface of earth is g calculate...
- Q How much below the surface of earth does acceleration due to gravity become 1 of its value at the earth s sur face The earth is assumed to be a...
- Q 29 The change in potential energy when a body of mass m is raised to height nR from the earth s surface is R is radius of earth 1 mgR...
- Q An artificial satellite is moving in a circular orbit around the earth with a speed equal to half the magnitude of escape velocity from the earth i Determine the height...
- Q A man of mass 90 kg is standing in an elevator whose cable broke suddenly If the elevator falls apparent weight of the man is 1 90 N 3 ON...
- Q 1 A satellite S is moving in an elliptical orbit around the earth The mass of the satellite is very small compared to the mass of the earth Then 1...
- Q 1 If the gravitational potential due to the earth on its surface is assumed to be zero then gravitational potential at height 2R from surface will be Re Radius of...
- Q If the distance between the sun and the earth is 400 times the distance between the moon and the earth and gravitational pull of the sun on the earth is...
- Q 33 There are two holes one each along the opposite sides of a wide rectangular tank The cross section of each hole is 0 01 m and the vertical distance...
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