The graph showing the variation of gravitational potential of Earth with distance from the centre of

Which of the following is true for a planet moving around the sun?

A planet has double mass of earth and same density. Weight of object becomes:

If distance of moon from earth becomes three times, lunar month becomes:

What is the change in potential energy (in calories) of a 10 kg mass after 41.8 m fall ?

A particle falls on earth : (i) from infinity (ii) from a height 10 times the radius of earth. The r