AIPMT Prelims Physics Gravitation Class 11 Questions
20 questions
The height which the weight of a body becomes 1/, its weight on the surface of earth (radius R) is
A geostationary satellite is orbiting the earth at a height of 5R above the surface of the earth, R being the radius of the earth. The time period of another satellite in hours at a height of 2R from the surface of the earth is
A spherical planet has a mass Mₚ and diameter Dₚ. A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity, equal to
A planet is moving around the sun in an elliptical orbit. Its closest to the sun at a distance r₁ and farthest away at a distance of r₂. If v₁ and v₂ are the linear velocities at these points respectively. Then the ratio v₁/v₂ is
The radii of circular orbits of two satellites A and B of the earth, are 4R and R, respectively. If the speed of satellite A is 3V, then the speed of satellite B will be
A particle of mass M is situated at the centre of a spherical shell of same mass and radius a. The gravitational potential at a point situated at a/2 distance from the centre, will be
The Figure shows elliptical orbit of a planet m about the sum S. The shaded area SCD is twice the shaded area SAB. If t₁ is the time for the planet of move from C to D and t₂ is the time to move from A to B then:
Two satellites of earth, S₁ and S₂ are moving in the same orbit. The mass of S₁ is four times the mass of S₂. Which one of the following statements is true?
The earth is assumed to be a sphere of radius R. A platform is arranged at a height R from the surface of the earth. The escape velocity of a body from this platform is ve, where ve is its escape velocity from the surface of the earth. The value of f is:
Imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. If the acceleration due to gravity on the surface of earth is g and that on the surface of the new planet is g', then:
For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is:
The density of 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 surface of the earth. If the radius of the earth is R, the radius of the planet would be :-
The dimensions of universal gravitational constant are :-
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 2m on the surface of A. What is the height of jump by the same person on the planet B.
Two spheres of masses m and M are situated in air and the gravitational force between them is F. The space around the masses in now filled with a liquid of specific density 3. The gravitational force will now be :
A solid sphere of radius R is placed on smooth horizontal surface. A horizontal force 'F' is applied at height 'h' from the lowest point. For the maximum, acceleration of centre of mass, which is correct :-
A body of mass m is placed on earth surface which is taken from earth surface to a height of h = 3R then change in gravitational potential energy is :-
With what velocity should a particle be projected so that its height becomes equal to radius of earth -
A body of weight 72 N moves from the surface of earth at a height half of the radius of the earth, then gravitational force exerted on it will be:
For a planet having mass equal to mass of the earth but radius is one fourth of radius of the earth. Then escape velocity for this planet will be: