Question

Which of the following is not true about gravitational force between two masses?

• A. Gravitational force is always attractive.
• B. Gravitational force is directly proportional to the product of the masses.
• C. Gravitational force is directly proportional to the square of separation between them.
• D. Gravitational force does not depend on the medium between two objects.

Answer 1

The correct option is C

Gravitational force is directly proportional to the square of separation between them.

The gravitational force between two particles is directly proportional to the product of masses and inversely proportional to the square of separation between them.

The gravitational force $F$ between two particles of mass $m_1$ and $m_2$ seperated by a distance $r$ is

$F=G\frac{m_1\times m_2}{r^2}$

$G$ is the universal gravitational constant.

Gravitational force is independent of the medium between the particles.