If the distance between the earth and moon were doubled, the gravitational force between them will be

Options

A. halved
B. doubled
C. quadrupled
D. reduced to `(1//4)^("th")`

Answer

d

Explanation

`(F_(2))/(F_(1))=((r_(1))/(r_(2)))^(2)=((r)/(2r))^(2)=(1)/(4)`
`F_(2)=(F)/(4).`