Question

Two charged spheres separated at a distance d exert a force $F$on each other. If they are immersed in a liquid of dielectric constant 2, then what is the force (if all conditions are same)

• A. $\frac{F}{2}$
• B. $F$
• C. $2F$
• D. $4F$

Answer 1

Answer: (A)

$\frac{F}{2}$

Answer 2

$F \propto \frac{1}{K}$ i.e. $\frac{F_{medium}}{F_{air}} = K$