In a medium, the force of attraction between two point charges, distance $d$ apart, is $F$. What distance apart should these point charges be kept in the same medium, so that the force between them becomes $16\, F$ ?
In a medium, the force of attraction between two point charges, distance $d$ apart, is $F$. What distance apart should these point charges be kept in the same medium, so that the force between them becomes $16\, F$ ?
- A
$\frac{d}{2}$
- B
$\frac{d}{4}$
- C
$\frac{d}{{\sqrt 3 }}$
- D
$\frac{d}{{\sqrt 2 }}$
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