Gravitation MCQ

If the earth is 1/4th of its present distance from the sun, the duration of the year would be

A missile is launched with a velocity less than the escape velocity. The sum of its kinetic and potential energy is

The period of geostationary artificial satellite is

When the planet comes nearer the sun moves

The period of a satellite in a circular orbit of radius R is T. The period of another satellite in circular orbit of radius 4R is

The period of geostationary artificial satellite of earth is

If the radius of the earth were to shrink by 1% its mass remaining the same, the acceleration due to gravity on the earth’s surface would

There is no atmosphere on the moon because

Kepler’s second law regarding constancy of arial velocity of a planet is a consequence of the law of conservation

The escape velocity of projection from the earth is approximately (R = 6400 km)

If the earth is 1/4th of its present distance from the sun, the duration of the year would be

A thief stole a box with valuable article of weight ‘W’ and jumped down a wall of height h. Before he reach the ground he experienced a load of

What would be the duration of the year if the distance between the earth and the sun gets doubled?

When body is raised to a height equal to radius of earth, the P.E. change is

Geo-stationary satellite

The radii of the earth and the moon are in the ratio 10 : 1 while acceleration due to gravity on th eearth’s surface and moon’s surface are in the ratio 6 : 1. The ratio of escape velocities from earth’s surface to that of moon surface is

Who among the following first gave the experimental velocity of G?

If escape velocity from the earth’s surface is 11.2 km/sec. then escape velocity from a planet of mass same as that of earth but radius one fourth as that of earth is

If g is the acceleration due to gravity of the earth’s surface the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth is

A thin uniform, circular ring is rolling down an inclined plane of inclination 30 degree  without slipping.Its linear acceleration along the inclined plane will be

The escape velocity from the earth’s surface is 11 km/sec. A certain planet has a radius twice that of the earth but its mean density is the same as that of the earth. The value of the escape velocity from this planet would be

If the radius of the earth were to shrink by one percent, its mass remaining the same, the acceleration due to gravity on the earth’s surface would

A satellite is revolving around the sun in a circular orbit with uniform velocity v. If the gravitational force suddenly disappears, the velocity of the satellite will be

A planet has twice the radius but the mean density is 1/4th as compared to earth. What is the radio of the escape velocity from the earth to that from the planet?

The masses of two planets are in the ratio 1 : 2. Their radii are in the ratio 1 : 2. The acceleration due to gravity on the planets are in the ratio.