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

A. Have same velocities at any instant

B. Have different accelerations

C. Experience forces of same magnitude

D. Undergo a change in their inertia

The force of attraction between two unit point masses separated by a unit distance is called:

A. Gravitational potential

B. Acceleration due to gravity

C. Gravitational field strength

D. Universal gravitational constant

The weight of an object at the centre of the earth of radius R is:

A. Zero

B. R times the weight at the surface of the earth.

C. Infinite

D. 1/R² times the weight at the surface of the earth

The value of acceleration due to gravity of earth:

A. Is the same on equator and poles?

B. Is the least on poles?

C. Is the least on equator?

D. Increases from pole to equator

The law of gravitation gives the gravitational force between:

A. The earth and a point mass only

B. The earth and the sun only

C. Any two bodies having some mass

D. Any two charged bodies only