Kepler’s law of equal areas is an outcome of

A planet is revolving around a star in a circular orbit of radius R with a period T. If the gravitational force between the planet and the star is proportional to $R^{-3\mathrm{/}2}\{R\}^\{-3/2\}$ , then

Time period of revolution of a satellite around a planet of radius R is T. Period of revolution around another planet whose radius is 3R is

Newton’s law of gravitation is called universal law because

If the mass of a body is M on the surface of the Earth, the mass of the same body on the surface of the moon is 

Which of the following statements about the gravitational constant is true?

The gravitational force between two bodies is ______

Mass of a particle at the centre of the Earth is

Which of the following is not a property of gravitational force?

If the distance between Sun and Earth is made two third times of the present value, then gravitational force between them will become