Two identical particles,each of mass m and charge q,are seperated by a distance of 50cm in a medium of dielectric constant 81.If the magnitude of the electrostatic force is equal to the gravitational force between them,the specific charge of each particle in C/kg is
Two identical particles,each of mass m and charge q,are seperated by a distance of 50cm in a medium of dielectric constant 81.If the magnitude of the electrostatic force is equal to the gravitational force between them,the specific charge of each particle in C/kg is