The potential energy of a particle in a force filled is U=(A)/(r^(2))-(B)/(r ) where A and B are positive constants and .r. is the distance of particle from the centre of the field. For stable equilibrium, the distance of the particle is

The potential energy of a particle in a force filled is U=(A)/(r^(2))-

1.	The potential energy of a particle in a force filled is U=(A)/(r^(2))-(B)/(r ) where A and B are positive constants and .r. is the distance of particle from the centre of the field. For stable equilibrium, the distance of the particle is
Answer» A/B B/A `(B)/(2A)` 2A/B Answer :D