Question

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

• A. acceleration due to gravity.
• B. universal gravitational constant.
• C. gravitational potential.
• D. gravitational field.

Answer 1

The correct option is B universal gravitational constant.

Force of gravitation between two masses is given by :-
$F=\frac{G{m}_1{m}_2}{r^2}$
Here, $m_1=1\text{kg}=m_2,r=1\text{m}$
$\Rightarrow F=\frac{G\times 1\times 1}{1^2}$
Or $F=G$
Thus, it is universal gravitational constant.