Two (-ve) charge, each of magnitude q ar...

Two (-ve) charge, each of magnitude q are situated at 2r distance apart. A (+ve) charge q is lying at the centre between them. The potential energy of the system is `U_1` If the two nearest charges are mutually interchanged and the potential energy becomes `U_2` then `U_1/U_2` will be

`3//2`

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