Question

Question 11
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
(d) universal gravitational constant

Answer 1

(d) universal gravitational constant​​​​​​​

According to Universal law of gravitation, $F=\frac{G{m}_1{m}_2}{r^2}$
Where, $m_1$ and $m_2$ are the masses of the objects, $r$ is the seperation distance between them, $F$ is the gravitational force between the objects and $G$ is the universal gravitational constant.
Given, $m_1=m_2=1unit$ and $r=1unit$
$\therefore F=\frac{G\times 1\times 1}{1^2}$
$\Rightarrow F=G$

Therefore, the force of attraction between two unit point masses separated by a unit distance is called universal gravitational constant.