Q. 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) $4F$
Explanation
(a) $F \propto \frac{1}{K}\ i.e.\ \frac{F_{air}}{F_{medium}} = K$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.