When the separation between two identical point masses is doubled

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

When the separation between two identical point masses is doubled, the magnitude of the gravitational force between them becomes (a)

\text{one-half of the original value}

(b)

\text{four times the original value}

(c)

\text{one-fourth of the original value}

(d)

\text{one-eighth of the original value}