If the mass of a body is $M$ on the Earth's surface,then the mass of the same body on the Moon's surface is:

Regarding fundamental forces in nature,the correct statement is

Two identical spheres are placed in contact with each other. The force of gravitation between the spheres will be proportional to ($R =$ radius of each sphere).

If the distance between two masses is doubled,the gravitational attraction between them

The force of gravitation is:

The change in the value of acceleration of the earth towards the sun,when the moon moves from the position of a solar eclipse to the position on the other side of the earth in line with the sun,is: (mass of the moon $= 7.36 \times 10^{22} \ kg$,radius of the moon's orbit $= 3.8 \times 10^8 \ m$).