1. An apple falls from a tree because of gravitational attraction between the earth and apple. If 'F' is the magnitude of force exerted by the earth on the apple and 'F2' is the magnitude of force exerted by apple on earth, then

2. In the relation F = GMm/r2, the quantity G

3. When a mango falls from a mango tree towards earth then

4. The atmosphere is held to the earth by

5. The gravitational force between two objects is F. If masses of both objects are halved without changing distance between them, then the gravitational force would become

6. The Mass of an object at the centre of the earth of radius R, is

7. If the gravitational attraction of the Earth suddenly disappears, which of the following statements will be true?

8. Universal Law of gravitation gives the gravitational force between

9. The acceleration due to gravity on the Earth depends upon the

10. Two objects of different masses falling freely near the surface of moon would

11. The value of acceleration due to gravity

12. The weight of an object at the centre of the earth of radius R, is

13. The value of quantity G in the Universal law of gravitation

14. The force of attraction between two unit point masses separated by a unit distance is equal to