Question

Two identical spheres of radius $R$ made of the same material are kept at a distance $d$ apart. Then the gravitational attraction between them is proportional to

• A. $d^{-2}$
• B. $d^2$
• C. $d^4$
• D. $d$

Answer 1

Answer: (A)

$d^{-2}$

Answer 2

$F=G \frac{m m}{d^{2}}$
$F \propto \frac{1}{d^{2}}$ or $F \propto d^{-2}$
The gravitation attraction between the identical sphere is proportional to $d^{-2}$.