Four identical point charges are fixed at the four corners of a square of a side length l. Another charged particle of mass m and charge +q is projected towards centre of square from a large, distance along the line perpendicular to plane of square. The minimum value of initial velocity V_(0) in m/s required to cross the square is? (m = 1gm.l=4sqrt(2)m,Q=1muc,q=0.5muc)

Four identical point charges are fixed at the four corners of a square

1.	Four identical point charges are fixed at the four corners of a square of a side length l. Another charged particle of mass m and charge +q is projected towards centre of square from a large, distance along the line perpendicular to plane of square. The minimum value of initial velocity V_(0) in m/s required to cross the square is? (m = 1gm.l=4sqrt(2)m,Q=1muc,q=0.5muc)
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