JEE Main & Advanced
Physics
Electrostatics & Capacitance
Question Bank
Charge and Coulombs Law
question_answer
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) [AIIMS 1997; MH CET 2003]
A) \[\frac{F}{2}\]
B) \[F\]
C) \[2F\]
D) \[4F\]
Correct Answer:
A
Solution :
\[F\propto \frac{1}{K}\] i.e. \[\frac{{{F}_{medium}}}{{{F}_{air}}}=K\]