Four particle each of mass 1kg are at the four corners of a square of side 1m. The work done to move one of the particles to infinity

Four particle each of mass 1kg are at the four corners of a square of

1.	Four particle each of mass 1kg are at the four corners of a square of side 1m. The work done to move one of the particles to infinity
Answer» `2sqrt(2)G` `((2sqrt(2)+1)/(SQRT(2)))G` `(2sqrt(2)+1)G` `3G` Answer :B