The radius and mass of earth are increased by 0.5%. Which of the following statements are true at the surface of the earth

Which of the following statements are true? For a particle on the surface of the earth:

If the radius of the earth shrinks by 0.2% without any change in its mass, the escape velocity from the surface of the earth

If R is the radius of the earth, the height at which g will decrease by 0.1% of its value at the surface of the earth is

If the radius of the earth decreases by 1% without changing its mass, will the acceleration dure to gravity at the surface of the earth increase or decrease? If so, by what per cent?

The mass of the earth is 81 times that of the moon and the radius of the earth is 3.5 times that of the moon. The ratio of the acceleration due to gravity at the surface of the moon to that at the surface of the earth is

The height of geostationary orbit above the surface of the earth is h. Radius of the earth is R. The earth shrinks to half its present radius (mass remaining unchanged). Now hat will be height of a geostationary satellite above the surface of the earth?

A satellite is revolving around earth in a circular orbit at a height (R )/(2) from the surface of earth. Which of the following are correct statements about it (M = mass of earth, R = radius of earth, m = mass of satellite) ?

The mass of the earth is 81 times that of the moon and the radius of the earth is 3.5 times that of the moon. The ratio of the escape velocity on the surface of earth to that on the surface of moon will be