Two electrons repel each other with a force when they are apart

PHYSICS · Single correct · CBSE · Physics · Electric Charges and Fields · Electric Charges and Fields

Problem

Two electrons repel each other with a force

F

when they are

2.0\times10^{-10}\,\text{m}

apart. If their separation is increased to

6.0\times10^{-10}\,\text{m}

, what is the new force in terms of

F

? (a)

9F

(b)

\dfrac{F}{3}

(c)

\dfrac{F}{9}

(d)

\dfrac{F}{6}